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Sat Dec 7 08:18:42 MST 2019
Cecil E. Hall Electron Densitometry of Stained Virus
Particles . . . . . . . . . . . . . . . 1
William Montagna Histology and Cytochemistry of Human
Skin . . . . . . . . . . . . . . . . . . 13
David P. Bloch and
Gabriel C. Godman A Microphotometric Study of the
Syntheses of Desoxyribonucleic Acid and
Nuclear Histone . . . . . . . . . . . . 17
Bertram Sacktor Cell Structure and the Metabolism of
Insect Flight Muscle . . . . . . . . . . 29
Eduardo D. P. De Robertis and
H. Stanley Bennett Some Features of the Submicroscopic
Morphology of Synapses in Frog and
Earthworm . . . . . . . . . . . . . . . 47
George E. Palade A Small Particulate Component of the
Cytoplasm . . . . . . . . . . . . . . . 59
Sanford L. Palay and
George E. Palade The Fine Structure of Neurons . . . . . 69
Charles Upton Lowe and
Albert L. Lehninger Oxidation and Phosphorylation in Liver
Mitochondria Lacking ``Polymerized''
Ribonucleic Acid . . . . . . . . . . . . 89
Virgil L. Koenig and
J. D. Perrings Sedimentation and Viscosity Studies on
the Capsular and Somatic Polysaccharides
of \bionamePneumococcus Type III . . . . 93
Robert C. Backus Adhesion Partitioning: Intrasomatic
Observations on Normal
\bionameEscherichia coli and T2
Bacteriophage . . . . . . . . . . . . . 99
Edward W. Dempsey and
George B. Wislocki The Use of Silver Nitrate As a Vital
Stain, and Its Distribution in Several
Mammalian Tissues As Studied with the
Electron Microscope . . . . . . . . . . 111
John J. Biesele Antagonistic Effects of
$6$-Mercaptopurine and Coenzyme a on
Mitochondria and Mitosis in Tissue
Culture . . . . . . . . . . . . . . . . 119
Robert F. Witter and
Michael L. Watson and
Mary A. Cottone Morphology and ATP-Ase of Isolated
Mitochondria . . . . . . . . . . . . . . 127
Alexander L. Dounce and
Robert F. Witter and
Kenneth J. Monty and
Sidney Pate and
Mary A. Cottone A Method for Isolating Intact
Mitochondria and Nuclei from the Same
Homogenate, and the Influence of
Mitochondrial Destruction on the
Properties of Cell Nuclei . . . . . . . 139
Alexander L. Dounce and
Kenneth J. Monty Factors Influencing the Ability of
Isolated Cell Nuclei to Form Gels in
Dilute Alkali . . . . . . . . . . . . . 155
V. L. van Breemen and
C. D. Clemente Silver Deposition in the Central Nervous
System and the Hematoencephalic Barrier
Studied with the Electron Microscope . . 161
A. Marshak and
C. Marshak Thymine in the Acid-Soluble Fraction of
\bionameArbacia Eggs . . . . . . . . . . 167
Manfred L. Karnovsky and
Susan Skilling Jeffrey and
Michaela Smits Thompson and
Helen Wendler Deane A Chemical and Histochemical Study of
the Lipides of the Pyloric Cecum of the
Starfish, Asterias Forbesi . . . . . . . 173
Michael L. Watson The Use of Carbon Films to Support
Tissue Sections for Electron Microscopy 183
A. R. T. Denues and
Frances C. Mottram Note on Nucleolonemata in Human Cultured
Cells . . . . . . . . . . . . . . . . . 185
Councilman Morgan and
G. H. Bergold and
Dan H. Moore and
Harry M. Rose The Macromolecular Paracrystalline
Lattice of Insect Viral Polyhedral
Bodies Demonstrated in Ultrathin
Sections Examined in the Electron
Microscope . . . . . . . . . . . . . . . 187
A. Gedeon Matoltsy and
George F. Odland Investigation of the Structure of the
Cornified Epithelium of the Human Skin 191
H. W. Beams and
T. N. Tahmisian and
R. L. Devine Electron Microscope Studies on the Cells
of the Malpighian Tubules of the
Grasshopper (\bionameOrthoptera,
Acrididae) . . . . . . . . . . . . . . . 197
Carolyn Cohen Optical Rotation and Helical Polypeptide
Chain Configuration in Collagen and
Gelatin . . . . . . . . . . . . . . . . 203
Jerome Gross and
A. Gedeon Matoltsy and
Carolyn Cohen Vitrosin: a Member of the Collagen Class 215
William L. Doyle Peptidase Distribution in Lymphatic
Tissue . . . . . . . . . . . . . . . . . 221
Charles Upton Lowe and
Deloris MacKinney and
Daljit Sarkaria Effects of Cortisone on Rat Liver
Mitochondria . . . . . . . . . . . . . . 237
Edward W. Dempsey and
George B. Wislocki An Electron Microscopic Study of the
Blood-Brain Barrier in the Rat,
Employing Silver Nitrate As a Vital
Stain . . . . . . . . . . . . . . . . . 245
Michael L. Watson The Nuclear Envelope . . . . . . . . . . 257
J. David Robertson The Ultrastructure of Adult Vertebrate
Peripheral Myelinated Nerve Fibers in
Relation to Myelinogenesis . . . . . . . 271
Myles Maxfield and
Robert W. Hartley Two Proteins Purified from Lobster Nerve
Extract . . . . . . . . . . . . . . . . 279
Mario H. Burgos and
Don W. Fawcett Studies on the Fine Structure of the
Mammalian Testis . . . . . . . . . . . . 287
Robley C. Williams and
Frances Kallman Interpretations of Electron Micrographs
of Single and Serial Sections . . . . . 301
Arthur J. Emery and
Alexander L. Dounce Intracellular Distribution of Alkaline
Phosphatase in Rat Liver Cells . . . . . 315
Arthur J. Emery and
Alexander L. Dounce Studies of Two Types of Alkaline
Phosphatase in Nuclei Isolated from the
Livers of Fed and Fasted Rats by a
Modification of the Behrens Technique 331
A. Gedeon Matoltsy and
Constance A. Balsamo A Study of the Components of the
Cornified Epithelium of Human Skin . . . 339
A. J. Hodge Studies on the Structure of Muscle . . . 361
William C. Robbins and
Robert F. Watson and
George D. Pappas and
Keith R. Porter Some Effects of Anti-Collagen Serum on
Collagen Formation in Tissue Culture: A
Preliminary Report . . . . . . . . . . . 381
Cecilie Leuchtenberger and
Paul F. Doolin and
Anne H. Kutsakis Buffered osmium tetroxide (OsO$_4$)
fixation for cytological and Feulgen
microspectrophotometric studies of human
rectal polyps . . . . . . . . . . . . . 385
Kohnosuke Takahashi and
Shoji Iwase On Artifacts Appearing in the
Histochemical Fixation of Glycogen . . . 391
George Setterfield and
Robert E. Duncan Cytological Studies on the
Antimetabolite Action of
2,6-Diaminopurine in \bionameVicia Faba
Roots . . . . . . . . . . . . . . . . . 399
Maria A. Rudzinska and
Keith R. Porter Observations on the Fine Structure of
the Macronucleus of Tokophrya Infusionum 421
Cecily Cannan Selby An Electron Microscope Study of the
Epidermis of Mammalian Skin in Thin
Sections . . . . . . . . . . . . . . . . 429
Eichi Yamada The Fine Structure of the Gall Bladder
Epithelium of the Mouse . . . . . . . . 445
Norman M. Sulkin Histochemical Studies on Mucoproteins in
Nerve Cells of the Dog . . . . . . . . . 459
Mary L. Petermann and
Mary G. Hamilton A Stabilizing Factor for Cytoplasmic
Nucleoproteins . . . . . . . . . . . . . 469
Maria A. Rudzinska The Use of OsO$_4$ Fixative for
Feulgen-Stained Preparations . . . . . . 472
Philip Siekevitz The Distinctive Occurrence of
Acid--Soluble Inosine in Rat Liver
Microsomal Preparations . . . . . . . . 477
M. Wachstein and
E. Meisel The Distribution of Histochemically
Demonstrable Succinic Dehydrogenase and
of Mitochondria in Tongue and Skeletal
Muscles . . . . . . . . . . . . . . . . 483
A. M. Woodin and
S. A. Boruchoff Particle Interaction in Solutions
Derived from Ox Vitreous Humor . . . . . 489
George B. Wislocki and
Aaron J. Ladman The Demonstration of a Blood-Ocular
Barrier in the Albino Rat by Means of
the Intravitam Deposition of Silver . . 501
Bernard A. Koechlin On the Chemical Composition of the
Axoplasm of Squid Giant Nerve Fibers
with Particular Reference to Its Ion
Pattern . . . . . . . . . . . . . . . . 511
David P. Bloch and
Gabriel C. Godman Evidence of Differences in the
Desoxyribonucleoprotein Complex of
Rapidly Proliferating and Non-Dividing
Cells . . . . . . . . . . . . . . . . . 531
Eichi Yamada The Fine Structure of the Renal
Glomerulus of the Mouse . . . . . . . . 551
George E. Palade Studies on the Endoplasmic Reticulum . . 567
Albert W. Sedar and
Keith R. Porter The Fine Structure of Cortical
Components of Paramecium
Multimicronucleatum . . . . . . . . . . 583
A. J. Hodge and
J. D. McLean and
F. V. Mercer Ultrastructure of the Lamellae and Grana
in the Chloroplasts of \bionameZea mays
L. . . . . . . . . . . . . . . . . . . . 605
Cecilie Leuchtenberger and
Franz Schrader Exceptional Desoxyribose Nucleic Acid
(DNA) Findings in a Sterile Dwarf Bull 615
Robert Love and
Ernest V. Orsi and
Hilary Koprowski Cytological and Cytochemical Properties
of Ten Ascites Tumors . . . . . . . . . 1
Adolph I. Cohen The Effect of Enucleation on the Dpn
Level of Ameba . . . . . . . . . . . . . 15
Councilman Morgan and
G. H. Bergold and
Harry M. Rose Use of Serial Sections to Delineate the
Structure of Porthetria Dispar Virus in
the Electron Microscope . . . . . . . . 23
Dominic D. Dziewiatkowski Turnover of S$^{35}$-Sulfate in the
Mucosa of the Gastrointestinal Tract of
Rats As Seen in Autoradiograms . . . . . 29
Edward L. Kuff and
George H. Hogeboom and
Albert J. Dalton Centrifugal, Biochemical, and Electron
Microscopic Analysis of Cytoplasmic
Particulates in Liver Homogenates . . . 33
Richard S. Bear and
Cecily Cannan Selby The Structure of Paramyosin Fibrils
According to X-Ray Diffraction . . . . . 55
Cecily Cannan Selby and
Richard S. Bear The Structure of Actin-Rich Filaments of
Muscles According to X-Ray Diffraction 71
William A. Jensen and
Leroy G. Kavaljian The Cytochemical Localization of
Ascorbic Acid in Root Tip Cells . . . . 87
Lionel I. Rebhun Electron Microscopy of Basophilic
Structures of Some Invertebrate Oocytes 93
Bertram Sacktor and
Richard Sanborn The Effect of Temperature on Oxidative
Phosphorylation with Insect Flight
Muscle Mitochondria . . . . . . . . . . 105
Max Alfert Chemical Differentiation of Nuclear
Proteins During Spermatogenesis in the
Salmon . . . . . . . . . . . . . . . . . 109
Silvio Fiala and
Edith E. Sproul and
Anna Fiala The Action of Corticotropin (Acth) on
Nucleic Acids and Subcellular Elements
of the Adrenal Cortex . . . . . . . . . 115
K. J. Monty and
M. Litt and
E. R. M. Kay and
A. L. Dounce Isolation and Properties of Liver Cell
Nucleoli . . . . . . . . . . . . . . . . 127
Arthur J. Hale and
Ernest R. M. Kay A Comparison of Nuclear Dry Weights
Determined by Chemical and by
Interferometric Methods . . . . . . . . 147
Lionel I. Rebhun Electron Microscopy of Basophilic
Structures of Some Invertebrate Oocytes 159
G. E. Palade and
P. Siekevitz Liver Microsomes . . . . . . . . . . . . 171
G. G. Knappeis and
F. Carlsen Electron Microscopical Study of Skeletal
Muscle During Isotonic (Afterload) and
Isometric Contraction . . . . . . . . . 201
Irwin Feigin A Method for the Histochemical
Differentiation of Cholesterol and Its
Esters . . . . . . . . . . . . . . . . . 213
Montrose J. Moses Chromosomal Structures in Crayfish
Spermatocytes . . . . . . . . . . . . . 215
Norman G. Anderson A Note on ``Homogenizers'' for Tissue
Brei Preparation . . . . . . . . . . . . 219
George D. Pappas Helical Structures in the Nucleus of
Amoeba proteus . . . . . . . . . . . . . 221
Mario H. Burgos and
Don W. Fawcett An Electron Microscope Study of
Spermatid Differentiation in the Toad,
\bionameBufo Arenarum Hensel . . . . . . 223
H. E. Karrer The Ultrastructure of Mouse Lung General
Architecture of Capillary and Alveolar
Walls . . . . . . . . . . . . . . . . . 241
Huntington Sheldon An Electron Microscope Study of the
Epithelium in the Normal Mature and
Immature Mouse Cornea . . . . . . . . . 253
C. H. U. Chu and
C. A. Swinyard Morphological and Cytochemical
Identification of the Golgi Apparatus 263
Norman E. Kemp Electron Microscopy of Growing Oocytes
of \bionameRana Pipiens . . . . . . . . 281
Alberto Fonnesu and
Clara Severi Oxidative Phosphorylation in
Mitochondria from Livers Showing Cloudy
Swelling . . . . . . . . . . . . . . . . 293
Kenneth M. Smith The Structure of Insect Virus Particles 301
Eduardo De Robertis and
Carlos M. Franchi Electron Microscope Observations on
Synaptic Vesicles in Synapses of the
Retinal Rods and Cones . . . . . . . . . 307
Eduardo De Robertis Electron Microscope Observations on the
Submicroscopic Organization of the
Retinal Rods . . . . . . . . . . . . . . 319
Charles Upton Lowe and
Royden N. Rand Alterations in Biochemical Composition
and Ribonucleic Acid Metabolism Induced
in Rat Liver by Cortisone . . . . . . . 331
Councilman Morgan and
Calderon Howe and
Harry M. Rose and
Dan H. Moore Structure and Development of Viruses
Observed in the Electron Microscope . . 351
A. Gedeon Matoltsy Sedimentation Studies of Epidermal
Keratins. Keratin A and Keratin B . . . 361
Richard S. Bear The Structure of Collagen Molecules and
Fibrils . . . . . . . . . . . . . . . . 363
Emil Borysko Recent Developments in Methacrylate
Embedding . . . . . . . . . . . . . . . 3
Emil Borysko Recent Developments in Methacrylate
Embedding . . . . . . . . . . . . . . . 15
Councilman Morgan and
Dan H. Moore and
Harry M. Rose Some Effects of the Microtome Knife and
Electron Beam on Methacrylate-Embedded
Thin Sections . . . . . . . . . . . . . 21
H. Fernández-Morán Applications of a Diamond Knife for
Ultrathin Sectioning to the Study of the
Fine Structure of Biological Tissues and
Metals . . . . . . . . . . . . . . . . . 29
Michael L. Watson Carbon Films and Specimen Stability . . 31
Isidore Gersh The Preparation of Frozen-Dried Tissue
for Electron Microscopy . . . . . . . . 37
John L. Stephenson Ice Crystal Growth During the Rapid
Freezing of Tissues . . . . . . . . . . 45
Leonard Ornstein How Thin Should a Section Be? . . . . . 53
D. A. Cameron A Note on Breaking Glass Knives . . . . 57
B. R. Nebel and
O. T. Minick Embedding Aid for Coverslip Mounts in
Electron Microscopy . . . . . . . . . . 61
Alex B. Novikoff Preservation of the Fine Structure of
Isolated Liver Cell Particulates with
Polyvinylpyrrollidone-Sucrose . . . . . 65
F. Wassermann and
L. Kubota Observations on Fibrillogenesis in the
Connective Tissue of the Chick Embryo
with the Aid of Silver Impregnation . . 67
W. Bernhard and
C. Rouiller Close Topographical Relationship Between
Mitochondria and Ergastoplasm of Liver
Cells in a Definite Phase of Cellular
Activity . . . . . . . . . . . . . . . . 73
A. J. Dalton and
Marie D. Felix A Comparative Study of the Golgi Complex 79
George E. Palade The Endoplasmic Reticulum . . . . . . . 85
H. Stanley Bennett The Concepts of Membrane Flow and
Membrane Vesiculation As Mechanisms for
Active Transport and Ion Pumping . . . . 99
D. Louise Odor Uptake and Transfer of Particulate
Matter from the Peritoneal Cavity of the
Rat . . . . . . . . . . . . . . . . . . 105
Marie D. Felix and
A. J. Dalton A Comparison of Mesothelial Cells and
Macrophages in Mice After the
Intraperitoneal Inoculation of Melanin
Granules . . . . . . . . . . . . . . . . 109
H. E. Karrer The Ultrastructure of Mouse Lung . . . . 115
Yves Clermont The Golgi Zone of the Rat Spermatid and
Its Role in the Formation of Cytoplasmic
Vesicles . . . . . . . . . . . . . . . . 119
H. W. Beams and
T. N. Tahmisian and
R. L. Devine and
Everett Anderson Electron Microscope Studies on the
Dictyosomes and Acroblasts in the Male
Germ Cells of the Cricket . . . . . . . 123
A. J. Hodge The Fine Structure of Striated Muscle 131
George A. Edwards and
Helmut Ruska and
Persio de Souza Santos and
Aristides Vallejo-Freire Comparative Cytophysiology of Striated
Muscle with Special Reference to the
Role of the Endoplasmic Reticulum . . . 143
David Spiro The Ultrastructure of Striated Muscle at
Various Sarcomere Lengths . . . . . . . 157
Keith R. Porter The Sarcoplasmic Reticulum in Muscle
Cells of Amblystoma Larvae . . . . . . . 163
H. Stanley Bennett The Sarcoplasmic Reticulum of Striped
Muscle . . . . . . . . . . . . . . . . . 171
Henry Finck and
Howard Holtzer and
John M. Marshall An Immunochemical Study of the
Distribution of Myosin in Glycerol
Extracted Muscle . . . . . . . . . . . . 175
Alex B. Novikoff and
H. Beaufay and
C. de Duve Electron Microscopy of Lysosome-Rich
Fractions from Rat Liver . . . . . . . . 179
H. Stanley Bennett A Suggestion As to the Nature of the
Lysosome Granules . . . . . . . . . . . 185
Norman E. Kemp Differentiation of the Cortical
Cytoplasm and Inclusions in Oocytes of
the Frog . . . . . . . . . . . . . . . . 187
Sanford L. Palay Synapses in the Central Nervous System 193
Daniel C. Pease Infolded Basal Plasma Membranes Found in
Epithelia Noted for Their Water
Transport . . . . . . . . . . . . . . . 203
E. De Robertis Morphogenesis of the Retinal Rods . . . 209
Betty Geren Uzman The Formation of Myelin in the
Peripheral Nerves of Vertebrates . . . . 219
A. J. Hodge Effects of the Physical Environment on
Some Lipoprotein Layer Systems and
Observations on Their Morphogenesis . . 221
John H. Luft The Fine Structure of the Electric Organ
of the Electric Eel and Torpedo Ray . . 229
C. F. Robinow Observations on Vase-Shaped,
Iron-Containing Houses of Two Colorless
Flagellates of the Family Bicoecidae . . 233
L. E. Roth Aspects of Ciliary Fine Structure in
Euplotes Patella . . . . . . . . . . . . 235
Marie A. Jakus Studies on the Cornea. II. The Fine
Structure of Descemet's Membrane . . . . 243
Robert A. Robinson and
D. A. Cameron Electron Microscopy of Cartilage and
Bone Matrix at the Distal Epiphyseal
Line of the Femur in the Newborn Infant 253
Jerome Gross The Behavior of Collagen Units As a
Model in Morphogenesis . . . . . . . . . 261
Paul Weiss and
Wayne Ferris The Basement Lamella of Amphibian Skin 275
V. L. van Breemen and
James F. Reger and
W. Gregory Cooper Observations on the Basement Membranes
in Rat Kidney . . . . . . . . . . . . . 283
H. E. Karrer The Ultrastructure of Mouse Lung . . . . 287
J. D. Lever The Subendothelial Space in Certain
Endocrine Tissues . . . . . . . . . . . 293
Leonard Ornstein A ``New'' Connective Tissue Fibril . . . 297
F. Wassermann and
Arthur Lindenbaum Experiments Concerning the Effect of
Enzymes on the Reconstitution of
Collagenous Fibrils in Vitro . . . . . . 299
E. W. Dempsey Variations in the Structure of
Mitochondria . . . . . . . . . . . . . . 305
J. D. Lever Physiologically Induced Changes in
Adrenocortical Mitochondria . . . . . . 313
Motohiko Tobioka and
John J. Biesele Mitochondria in Living Cells: an
Analysis of Movements . . . . . . . . . 319
T. N. Tahmisian and
E. L. Powers and
R. L. Devine Light and Electron Microscope Studies of
Morphological Changes of Mitochondria
During Spermatogenesis in the
Grasshopper . . . . . . . . . . . . . . 325
Albert W. Sedar and
Maria A. Rudzinska Mitochondria of Protozoa . . . . . . . . 331
Frank N. Low Mitochondrial Structure . . . . . . . . 337
E. L. Powers and
C. F. Ehret and
L. E. Roth and
O. T. Minick The Internal Organization of
Mitochondria . . . . . . . . . . . . . . 341
Carl G. Harford and
Alice Hamlin and
Esther Parker and
Theodore van Ravenswaay Globoid Structures in the Cytoplasm of
Rapidly Growing HeLa Cells . . . . . . . 347
Leonard Ornstein Mitochondrial and Nuclear Interaction 351
James A. Freeman The Ultrastructure of the Double
Membrane Systems of Mitochondria . . . . 353
C. Rouiller and
W. Bernhard ''Microbodies'' and the Problem of
Mitochondrial Regeneration in Liver
Cells . . . . . . . . . . . . . . . . . 355
Bruno Kisch The Sarcosomes of the Heart . . . . . . 361
Allan F. Howatson The Structure of Pigeon Breast Muscle
Mitochondria . . . . . . . . . . . . . . 363
W. Duane Belt and
Daniel C. Pease Mitochondrial Structure in Sites of
Steroid Secretion . . . . . . . . . . . 369
J. Francis Hartmann Electron Microscopy of Mitochondria in
the Central Nervous System . . . . . . . 375
Michael L. Watson and
Philip Siekevitz The Isolation and Analysis of a
Mitochondrial Membrane Fraction . . . . 379
J. David Robertson The Ultrastructure of a Reptilian
Myoneural Junction . . . . . . . . . . . 381
Hans Ris A Study of Chromosomes with the Electron
Microscope . . . . . . . . . . . . . . . 385
Joseph G. Gall Small Granules in the Amphibian Oocyte
Nucleus and Their Relationship to RNA 393
Dennis Lacy and
Cyril E. Challice Studies on the Golgi Apparatus by
Electron Microscopy with Particular
Reference to Aoyama's Technique . . . . 395
Montrose J. Moses Studies on Nuclei Using Correlated
Cytochemical, Light, and Electron
Microscope Techniques . . . . . . . . . 397
Don W. Fawcett The Fine Structure of Chromosomes in the
Meiotic Prophase of Vertebrate
Spermatocytes . . . . . . . . . . . . . 403
Helen Gay Chromosome-Nuclear Membrane-Cytoplasmic
Interrelations in \bionameDrosophila . . 407
Hewson Swift The Fine Structure of Annulate Lamellae 415
George E. Palade Intracisternal Granules in the Exocrine
Cells of the Pancreas . . . . . . . . . 417
Berwind P. Kaufmann and
Deepesh N. De Fine Structure of Chromosomes . . . . . 419
Dorothy R. Pitelka An Electron Microscope Study of Cortical
Structures of Opalina Obtrigonoidea . . 423
Maria A. Rudzinska Further Observations on the Fine
Structure of the Macronucleus in
Tokophrya Infusionum . . . . . . . . . . 425
George D. Pappas The Fine Structure of the Nuclear
Envelope of Amoeba Proteus . . . . . . . 431
Arline D. Deitch and
Margaret R. Murray The Nissl Substance of Living and Fixed
Spinal Ganglion Cells . . . . . . . . . 433
Ruth G. Kleinfeld and
Marie H. Greider and
Walter J. Frajola Electron Microscopy of Intranuclear
Inclusions Found in Human and Rat Liver
Parenchymal Cells . . . . . . . . . . . 435
Everett Anderson and
H. W. Beams Evidence from Electron Micrographs for
the Passage of Material Through Pores of
the Nuclear Membrane . . . . . . . . . . 439
Marie H. Greider and
Wencel J. Kostir and
Walter J. Frajola Electron Microscopy of the Nuclear
Membrane of Amoeba Proteus . . . . . . . 445
Paul O. P. Ts'o and
James Bonner and
Jerome Vinograd Microsomal Nucleoprotein Particles from
Pea Seedlings . . . . . . . . . . . . . 451
David S. Maxwell and
Daniel C. Pease The Electron Microscopy of the Choroid
Plexus . . . . . . . . . . . . . . . . . 467
Wayne Thornburg and
Eduardo De Robertis Polarization and Electron Microscope
Study of Frog Nerve Axoplasm . . . . . . 475
Barbara W. Low and
Peter R. Pinnock The Packing Structure of Crystalline
RI--APC Virus . . . . . . . . . . . . . 483
Marvin M. Nachlas and
William Prinn and
Arnold M. Seligman Quantitative Estimation of Lyo- and
Desmoenzymes in Tissue Sections with and
Without Fixation . . . . . . . . . . . . 487
Eduardo De Robertis Submicroscopic Changes of the Synapse
After Nerve Section in the Acoustic
Ganglion of the Guinea Pig. An Electron
Microscope Study . . . . . . . . . . . . 503
Werner Straus Concentration of acid phosphatase,
ribonuclease, desoxyribonuclease, $
\beta $-glucuronidase, and cathepsin in
``droplets'' isolated from the kidney
cells of normal rats . . . . . . . . . . 513
Robert D. Griesemer Change in Enzyme Activity and
Ribonucleic Acid Concentration Within
the Epidermal Cell of the Rat During the
Growth Stage of the Hair Cycle . . . . . 523
Sarah A. Luse Electron Microscopic Observations of the
Central Nervous System . . . . . . . . . 531
B. A. Kihlman Factors Affecting the Production of
Chromosome Aberrations by Chemicals . . 543
Eugene L. Hess and
Saima E. Lagg The Chemical Fractionation of Lymphatic
Organs . . . . . . . . . . . . . . . . . 557
Walter Plaut and
Daniel Mazia The Distribution of Newly Synthesized
DNA in Mitotic Division . . . . . . . . 573
Helen J. Morton and
Arthur E. Pasieka and
Joseph F. Morgan The Nutrition of Animal Tissues
Cultivated in Vitro . . . . . . . . . . 589
A. J. Hodge and
J. D. McLean and
F. V. Mercer A Possible Mechanism for the
Morphogenesis of Lamellar Systems in
Plant Cells . . . . . . . . . . . . . . 597
M. S. C. Birbeck and
E. Reid Development of an Improved Medium for
the Isolation of Liver Mitochondria . . 609
Cecil E. Hall Method for the Observation of
Macromolecules with the Electron
Microscope Illustrated with Micrographs
of DNA . . . . . . . . . . . . . . . . . 625
Frank N. Low and
James A. Freeman Some Experiments with Chromium Compounds
as Fixers for Electron Microscopy . . . 629
Maurice H. Bernstein Iron as a Stain for Nucleic Acids in
Electron Microscopy . . . . . . . . . . 633
Eluned Underhay and
S. J. Holt and
H. Beaufay and
C. de Duve Intracellular Localization of Esterase
in Rat Liver . . . . . . . . . . . . . . 635
Michael L. Watson and
Philip Siekevitz Cytochemical Studies of Mitochondria . . 639
Philip Siekevitz and
Michael L. Watson Cytochemical Studies of Mitochondria . . 653
G. E. Palade and
P. Siekevitz Pancreatic Microsomes . . . . . . . . . 671
Jean Hanson Studies on the Cross-Striation of the
Indirect Flight Myofibrils of the
Blowfly \bionameCalliphora . . . . . . . 691
Charles U. Lowe and
Royden N. Rand The Effect of Cortisone on DNA Content
of Rat Hepatocytes . . . . . . . . . . . 711
Don W. Fawcett Electron Microscope Observations on
Intracellular Virus-Like Particles
Associated with the Cells of the LuckÉ
Renal Adenocarcinoma . . . . . . . . . . 725
E. W. Dempsey and
G. B. Wislocki Electron Microscopic Observations on the
Placenta of the Cat . . . . . . . . . . 743
Dan H. Moore and
Helmut Ruska and
Wilfred M. Copenhaver Electron Microscopic and Histochemical
Observations of Muscle Degeneration
After Tourniquet . . . . . . . . . . . . 755
John W. Woodard DNA in Gametogenesis and Embryogeny in
\bionameTradescantia . . . . . . . . . . 765
Sarah A. Luse Formation of Myelin in the Central
Nervous System of Mice and Rats, As
Studied with the Electron Microscope . . 777
E. De Robertis Electron Microscopic Observations on the
Submicroscopic Morphology of the Meiotic
Nucleus and Chromosomes . . . . . . . . 785
J. Paul The Chemical Determination of
Deoxyribonucleic Acid in Tissue Cultures 797
John H. Luft Permanganate --- a New Fixative for
Electron Microscopy . . . . . . . . . . 799
David P. Bloch and
Councilman Morgan and
Gabriel C. Godman and
Calderon Howe and
Harry M. Rose A Correlated Histochemical and Electron
Microscopic Study of the Intranuclear
Crystalline Aggregates of Adenovirus
(Ri-Apc Virus) in HeLa Cells . . . . . . 1
Douglas E. Smith and
Yevette S. Lewis Electron Microscopy of the Tissue Mast
Cell . . . . . . . . . . . . . . . . . . 9
Richard L. Sidman The Structure and Concentration of
Solids in Photoreceptor Cells Studied by
Refractometry and Interference
Microscopy . . . . . . . . . . . . . . . 15
K. Bruce Jacobson and
Nathan O. Kaplan Distribution of Enzymes Cleaving
Pyridine Nucleotides in Animal Tissues 31
Russell L. Steere Electron Microscopy of Structural Detail
in Frozen Biological Specimens . . . . . 45
A. J. Hodge and
E. M. Martin and
R. K. Morton The Structure of Some Cytoplasmic
Components of Plant Cells in Relation to
the Biochemical Properties of Isolated
Particles . . . . . . . . . . . . . . . 61
Philip S. Woods A Chromatographic Study of Hydrolysis in
the Feulgen Nucleal Reaction . . . . . . 71
J. B. Finean and
P. F. Millington Effects of Ionic Strength of Immersion
Medium on the Structure of Peripheral
Nerve Myelin . . . . . . . . . . . . . . 89
J. B. Finean The Role of Water in the Structure of
Peripheral Nerve Myelin . . . . . . . . 95
Lord Rothschild The Membrane Capacitance of the Sea
Urchin Egg . . . . . . . . . . . . . . . 103
Jean Hanson The Structure of the Smooth Muscle
Fibres in the Body Wall of the Earthworm 111
Robert Love The Nucleolus and Parachromatin of the
Ascites Tumor Cell . . . . . . . . . . . 123
Alex B. Novikoff and
S. J. Holt Esterase-Rich Bodies in Osmium--Fixed
Cells of Rat Kidney and Liver . . . . . 127
Ruth Guttman Alterations in Nuclear Ribonucleic Acid
Metabolism Induced by Kinetin . . . . . 129
I. R. Gibbons and
J. R. G. Bradfield The Fine Structure of Nuclei During
Sperm Maturation in the Locust . . . . . 133
Joseph F. Morgan and
Helen J. Morton The Nutrition of Animal Tissues
Cultivated in Vitro . . . . . . . . . . 141
Dominic D. Dziewiatkowski and
Felix Bronner and
Nicola Di Ferrante and
Reginald M. Archibald Some Aspects of the Metabolism of
Sulfate-S$^{35}$ and Calcium-45 in the
Metaphyses of Immature Rats . . . . . . 151
W. Robert Adams and
Alfred M. Prince An Electron Microscope Study of the
Morphology and Distribution of the
Intracytoplasmic ``Virus-Like''
Particles of Ehrlich Ascites Tumor Cells 161
S. T. Bayley and
J. R. Colvin and
F. P. Cooper and
Cecily A. Martin-Smith The Structure of the Primary Epidermal
Cell Wall of Avena Coleoptiles . . . . . 171
R. K. F. Pak Poy and
J. S. Robertson Electron Microscopy of the Avian Renal
Glomerulus . . . . . . . . . . . . . . . 183
Alan R. Muir An Electron Microscope Study of the
Embryology of the Intercalated Disc in
the Heart of the Rabbit . . . . . . . . 193
M. S. C. Birbeck and
E. H. Mercer The Electron Microscopy of the Human
Hair Follicle . . . . . . . . . . . . . 203
M. S. C. Birbeck and
E. H. Mercer The Electron Microscopy of the Human
Hair Follicle . . . . . . . . . . . . . 215
M. S. C. Birbeck and
E. H. Mercer The Electron Microscopy of the Human
Hair Follicle . . . . . . . . . . . . . 223
Perry M. Johnston and
Cyril L. Comar Autoradiographic Studies of the
Utilization of S$^{35}$-Sulfate by the
Chick Embryo . . . . . . . . . . . . . . 231
Shigefumi Okada and
Lee D. Peachey Effect of Gamma Irradiation on the
Desoxyribonuclease Ii Activity of
Isolated Mitochondria . . . . . . . . . 239
Helmut Ruska and
Dan H. Moore and
John Weinstock The Base of the Proximal Convoluted
Tubule Cells of Rat Kidney . . . . . . . 249
Dan H. Moore and
Philip M. Grimley Problems in Methacrylate Embedding for
Electron Microscopy . . . . . . . . . . 255
Dan H. Moore and
Helmut Ruska Electron Microscope Study of Mammalian
Cardiac Muscle Cells . . . . . . . . . . 261
Keith R. Porter and
George E. Palade Studies on the Endoplasmic Reticulum . . 269
J. Roberto Sotelo and
Omar Trujillo-Cenóz Electron Microscope Study of the
Vitelline Body of Some Spider Oocytes 301
Dorothy Gelber Thin Sectioning: Details of Techniques 311
O. A. Trowell Re-utilization of Lymphocytes in
Lymphopoiesis . . . . . . . . . . . . . 317
Marilyn G. Farquhar and
S. Robert Wellings Electron Microscopic Evidence Suggesting
Secretory Granule Formation within the
Golgi Apparatus . . . . . . . . . . . . 319
Cecile Leuchtenberger and
Georgiana S. Boyer The Occurrence of Intranuclear Crystals
in Living HeLa Cells Infected with
Adenoviruses . . . . . . . . . . . . . . 323
Richard W. Hendler and
Albert J. Dalton and
George G. Glenner A Cytological Study of the
Albumin-Secreting Cells of the Hen
Oviduct . . . . . . . . . . . . . . . . 325
Daniel C. Pease and
T. Andrew Quilliam Electron Microscopy of the Pacinian
Corpuscle . . . . . . . . . . . . . . . 331
William Montagna Histology and Cytochemistry of Human
Skin . . . . . . . . . . . . . . . . . . 343
Sam L. Clark Cellular Differentiation in the Kidneys
of Newborn Mice Studied with the
Electron Microscope . . . . . . . . . . 349
B. A. Kihlman Experimentally Induced Chromosome
Aberrations in Plants . . . . . . . . . 363
B. A. Kihlman and
T. Merz and
C. P. Swanson Experimentally Induced Chromosome
Aberrations in Plants . . . . . . . . . 381
Henry Grossfeld and
Karl Meyer and
Gabriel Godman and
Alfred Linker Mucopolysaccharides Produced in Tissue
Culture . . . . . . . . . . . . . . . . 391
Herbert J. Eichel and
With the Technical Assistance of Jeanne Hagan Intracellular Localization of Enzymes in
Spleen . . . . . . . . . . . . . . . . . 397
Wayne Thornburg The Form Birefringence of Lamellar
Systems Containing Three Or More
Components . . . . . . . . . . . . . . . 413
William H. Miller Morphology of the Ommatidia of the
Compound Eye of Limulus . . . . . . . . 421
Timothy H. Goldsmith and
Delbert E. Philpott The Microstructure of the Compound Eyes
of Insects . . . . . . . . . . . . . . . 429
J. J. Wolken and
J. Capenos and
A. Turano Photoreceptor Structures . . . . . . . . 441
Arline D. Deitch and
Montrose J. Moses The Nissl Substance of Living and Fixed
Spinal Ganglion Cells . . . . . . . . . 449
Dan H. Moore and
Helmut Ruska The Fine Structure of Capillaries and
Small Arteries . . . . . . . . . . . . . 457
Ruth Sager and
George E. Palade Structure and Development of the
Chloroplast in Chlamydomonas . . . . . . 463
Arthur L. Colwin and
Laura Hunter Colwin and
Delbert E. Philpott Electron Microscope Studies of Early
Stages of Sperm Penetration in Hydroides
Hexagonus (Annelida) and Saccoglossus
Kowalevskii (Enteropneusta) . . . . . . 489
Marcel C. Bessis and
Janine Breton-Gorius Iron Particles in Normal Erythroblasts
and Normal and Pathological Erythrocytes 503
Councilman Morgan and
Gabriel C. Godman and
Harry M. Rose and
Calderon Howe and
Joseph S. Huang Electron Microscopic and Histochemical
Studies of an Unusual Crystalline
Protein Occurring in Cells Infected by
Type 5 Adenovirus. Preliminary
Observations . . . . . . . . . . . . . . 505
Lionel I. Rebhun Nuclear Changes During Spermiogenesis in
a Pulmonate Snail . . . . . . . . . . . 509
Tosisuke Hiraoka Feulgen Nucleal Reaction . . . . . . . . 525
Paul M. Gallop and
Sam Seifter and
Edward Meilman The solubility and properties of a
purified ichthyocol in salt solutions of
neutral pH . . . . . . . . . . . . . . . 545
L. F. Bélanger and
W. J. Visek and
W. E. Lotz and
C. L. Comar The Effects of Fluoride Feeding on the
Organic Matrix of Bones and Teeth of
Pigs As Observed by Autoradiography
After in Vitro Uptake of Ca$^{45}$ and
S$^{35}$ . . . . . . . . . . . . . . . . 559
M. A. Epstein The Fine Structure of the Cells in Mouse
Sarcoma 37 Ascitic Fluids . . . . . . . 567
Russell J. Barrnett and
George E. Palade Histochemical Demonstration of the Sites
of Activity of Dehydrogenase Systems
with the Electron Microscope . . . . . . 577
Betty Geren Uzman and
Genevieve Nogueira-Graf Electron Microscope Studies of the
Formation of Nodes of Ranvier in Mouse
Sciatic Nerves . . . . . . . . . . . . . 589
Leon Weiss A Study of the Structure of Splenic
Sinuses in Man and in the Albino Rat
with the Light Microscope and the
Electron Microscope . . . . . . . . . . 599
Eduardo De Robertis and
Alberto Vaz Ferreira Submicroscopic Changes of the Nerve
Endings in the Adrenal Medulla after
Stimulation of the Splanchnic Nerve . . 611
John Luft and
Oscar Hechter An Electron Microscopic Correlation of
Structure with Function in the Isolated
Perfused Cow Adrenal, Preliminary
Observations . . . . . . . . . . . . . . 615
Huntington Sheldon A Method for Evaluating Glass Knives . . 621
Walter Plaut and
Ronald C. Rustad Cytoplasmic Incorporation of a
Ribonucleic Acid Precursor in Amoeba
proteus . . . . . . . . . . . . . . . . 625
H. E. Huxley The Double Array of Filaments in
Cross-Striated Muscle . . . . . . . . . 631
Alexander L. Dounce and
Marguerite P. O'Connell and
Kenneth J. Monty and
With the Technical Assistance of Joan C. W. West Action of Mitochondrial DNA Ase I in
Destroying the Capacity of Isolated Cell
Nuclei to Form Gels . . . . . . . . . . 649
G. Yasuzumi and
Hiroshi Ishida Spermatogenesis in Animals As Revealed
by Electron Microscopy . . . . . . . . . 663
Diego Carlström The crystal structure of $ \alpha
$-chitin
(poly-$n$-acetyl-$d$--glucosamine) . . . 669
J. Frederick Woessner and
Bernard S. Gould Collagen Biosynthesis . . . . . . . . . 685
George G. Rose Microkinetospheres and Vp Satellites of
Pinocytic Cells Observed in Tissue
Cultures of Gey's Strain HeLa with Phase
Contrast Cinematographic Techniques . . 697
Howard Holtzer and
John M. Marshall and
Henry Finck An Analysis of Myogenesis by the Use of
Fluorescent Antimyosin . . . . . . . . . 705
H. Fernández-morán and
J. B. Finean Electron Microscope and Low-Angle X-Ray
Diffraction Studies of the Nerve Myelin
Sheath . . . . . . . . . . . . . . . . . 725
Carl G. Harford and
Alice Hamlin and
Esther Parker Electron Microscopy of HeLa Cells After
the Ingestion of Colloidal Gold . . . . 749
Leon C. Edwards and
K. N. Udupa Autoradiographic Determination of
S$^{35}$ in Tissues After Injection of
Methionine-S$^{35}$ and Sodium
Sulfate-S$^{35}$ . . . . . . . . . . . . 757
R. Langridge and
W. E. Seeds and
H. R. Wilson and
C. W. Hooper and
M. H. F. Wilkins and
L. D. Hamilton Molecular Structure of Deoxyribonucleic
Acid (DNA) . . . . . . . . . . . . . . . 767
Dennis Lacy The Golgi Apparatus in Neurons and
Epithelial Cells of the Common Limpet
Patella Vulgata . . . . . . . . . . . . 779
Charles Grégoire Topography of the Organic Components in
Mother-Of-Pearl . . . . . . . . . . . . 797
Leonard Ornstein ''Osmiophilia,'' Fact or Fiction? . . . 809
Eugene L. Hess and
Saima E. Lagg The Chemical Fractionation of Rabbit and
Swine Thymus . . . . . . . . . . . . . . 812
V. E. Cosslett How Thin Should a Section Be? . . . . . 815
L. E. Roth The Spermatid Cell Membrane in
Melanoplus differentialis . . . . . . . 816
George T. Rudkin and
Sally L. Corlette A Photographic Method for Measuring
Ultraviolet Radiation Scattered from
Microscopic Objects . . . . . . . . . . 821
James B. Caulfield Effects of Varying the Vehicle for
OsO$_4$ in Tissue Fixation . . . . . . . 827
Shinya Inoué and
W. Lewis Hyde Studies on Depolarization of Light at
Microscope Lens Surfaces . . . . . . . . 831
A. J. de Lorenzo Electron Microscopic Observations of the
Olfactory Mucosa and Olfactory Nerve . . 839
M. A. Epstein The Fine Structural Organisation of Rous
Tumour Cells . . . . . . . . . . . . . . 851
Adolph I. Cohen Electron Microscopic Observations of
Amoeba Proteus in Growth and Inanition 859
Rudolf Caesar and
George A. Edwards and
Helmut Ruska Architecture and Nerve Supply of
Mammalian Smooth Muscle Tissue . . . . . 867
Edward S. Rorem and
Leonard Machlis The Ribonucleoprotein Nature of Large
Particles in the Meiosporangia of
Allomyces . . . . . . . . . . . . . . . 879
Ronald H. Locker and
Francis O. Schmitt Some Chemical and Structural Properties
of Paramyosin . . . . . . . . . . . . . 889
Sylvia Fitton Jackson and
R. H. Smith Studies on the Biosynthesis of Collagen 897
R. H. Smith and
Sylvia Fitton Jackson Studies on the Biosynthesis of Collagen 913
Adolph I. Cohen The Cell in Starvation: Physiological
and Chemical Observations . . . . . . . 923
Werner Straus Changes in ``Droplet'' Fractions from
Rat Kidney Cells After Intraperitoneal
Injection of Egg White . . . . . . . . . 933
Hiroto Naora Microspectrophotometry of Cell Nuclei
Stained with the Feulgen Reaction . . . 949
Jean André and
Charles Rouiller The Ultrastructure of the Vitelline Body
in the Oocyte of the Spider Tegenaria
Parietina . . . . . . . . . . . . . . . 977
L. E. Roth An Electron Microscope Study of the
Cytology of the Protozoan Euplotes
Patella . . . . . . . . . . . . . . . . 985
Christopher L. Hannay The Parasporal Body of Bacillus
Laterosporus Laubach . . . . . . . . . . 1001
Huntington Sheldon and
Robert A. Robinson Electron Microscope Studies of
Crystal-Collagen Relationships in Bone 1011
Michael L. Watson Reduction of Heating Artifacts in Thin
Sections Examined in the Electron
Microscope . . . . . . . . . . . . . . . 1017
Eric G. Ball and
Russell J. Barrnett An Integrated Morphological and
Biochemical Study of a Purified
Preparation of the Succinate and Dpnh
Oxidase System . . . . . . . . . . . . . 1023
Werner Straus Segregation of an Intravenously Injected
Protein by ``Droplets'' of the Cells of
Rat Kidneys . . . . . . . . . . . . . . 1037
Saul Wischnitzer The Ultrastructure of Yolk Platelets of
Amphibian Oocytes . . . . . . . . . . . 1040
J. David Robertson New Observations on the Ultrastructure
of the Membranes of Frog Peripheral
Nerve Fibers . . . . . . . . . . . . . . 1043
Cecil E. Hall and
Michael Litt Morphological Features of DNA
Macromolecules as Seen with the Electron
Microscope . . . . . . . . . . . . . . . 1
Rachel McMaster-Kaye and
J. Herbert Taylor Evidence for Two Metabolically Distinct
Types of Ribonucleic Acid in Chromatin
and Nucleoli . . . . . . . . . . . . . . 5
Jerry Steven Trier The Fine Structure of the Parathyroid
Gland . . . . . . . . . . . . . . . . . 13
Richard L. Schultz and
Roland K. Meyer Biological Activity of Fractions
Obtained by Differential Centrifugation
of the Bovine Adrenal Cortex . . . . . . 23
Marvin M. Nachlas and
Donald G. Walker and
Arnold M. Seligman A Histochemical Method for the
Demonstration of Diphosphopyridine
Nucleotide Diaphorase . . . . . . . . . 29
J. David Robertson The Ultrastructure of Schmidt--Lanterman
Clefts and Related Shearing Defects of
the Myelin Sheath . . . . . . . . . . . 39
Vivianne T. Nachmias and
Helen A. Padykula A Histochemical Study of Normal and
Denervated Red and White Muscles of the
Rat . . . . . . . . . . . . . . . . . . 47
Goetz W. Richter Electron Microscopy of Hemosiderin:
Presence of Ferritin and Occurrence of
Crystalline Lattices in Hemosiderin
Deposits . . . . . . . . . . . . . . . . 55
Hudson R. Ansley Histones of Mitosis and Meiosis in Loxa
flavicolis (Hemipteran) . . . . . . . . 59
Don W. Fawcett and
Cecily C. Selby Observations on the Fine Structure of
the Turtle Atrium . . . . . . . . . . . 63
Robert F. Witter and
William Mink Effect of Synthetic Detergents on the
Swelling and the ATPase of Mitochondria
Isolated from Rat Liver . . . . . . . . 73
Everett Anderson and
V. L. van Breemen Electron Microscopic Observations on
Spinal Ganglion Cells of Rana pipiens
after Injection of Malononitrile . . . . 83
H. A. Lund and
A. E. Vatter and
J. B. Hanson Biochemical and Cytological Changes
Accompanying Growth and Differentiation
in the Roots of Zea mays . . . . . . . . 87
Jean G. Lafontaine and
Hans Ris An Electron Microscope Study of
Lampbrush Chromosomes . . . . . . . . . 99
George A. Edwards and
Helmut Ruska and
Étienne de Harven Electron Microscopy of Peripheral Nerves
and Neuromuscular Junctions in the Wasp
Leg . . . . . . . . . . . . . . . . . . 107
Allan F. Howatson and
June D. Almeida A Method for the Study of Cultured Cells
by Thin Sectioning and Electron
Microscopy . . . . . . . . . . . . . . . 115
H. Stich and
W. Plaut The Effect of Ribonuclease on Protein
Synthesis in Nucleated and Enucleated
Fragments of Acetabularia . . . . . . . 119
L. D. Hamilton and
M. E. Gettner Fine Structure of Kappa in Paramecium
aurelia . . . . . . . . . . . . . . . . 122
Ruth V. Dippell The Fine Structure of Kappa in Killer
Stock 51 of Paramecium aurelia.
Preliminary Observations . . . . . . . . 125
C. M. S. Dass and
Hans Ris Submicroscopic Organization of the
Nucleus during Spermiogenesis in the
Grasshopper . . . . . . . . . . . . . . 129
Étienne de Harven A New Technique for Carbon Films . . . . 133
Don W. Fawcett and
Susumu Ito Observations on the Cytoplasmic
Membranes of Testicular Cells, Examined
by Phase Contrast and Electron
Microscopy . . . . . . . . . . . . . . . 135
A. J. de Lorenzo Electron Microscopic Observations on the
Taste Buds of the Rabbit . . . . . . . . 143
Étienne de Harven and
Charlotte Friend Electron Microscope Study of a Cell-Free
Induced Leukemia of the Mouse: a
Preliminary Report . . . . . . . . . . . 151
Herbert Stern Variations in Sulfhydryl Concentration
During Microsporocyte Meiosis in the
Anthers of Lilium and Trillium . . . . . 157
Perry M. Johnston Autoradiographic Studies of the
Utilization of Ca$^{45}$ by the Chick
Embryo . . . . . . . . . . . . . . . . . 163
Russell J. Barrnett and
Arnold M. Seligman Histochemical Demonstration of
Protein--Bound Alpha--Acylamido Carboxyl
Groups . . . . . . . . . . . . . . . . . 169
Bryce L. Munger Polarization Optical Properties of the
Pancreatic Acinar Cell of the Mouse . . 177
R. C. Buck The Fine Structure of Endothelium of
Large Arteries . . . . . . . . . . . . . 187
Audrey M. Glauert and
R. H. Glauert Araldite as an Embedding Medium for
Electron Microscopy . . . . . . . . . . 191
Maria A. Rudzinska An Electron Microscope Study of the
Contractile Vacuole in Tokophrya
infusionum . . . . . . . . . . . . . . . 195
Philip Siekevitz and
George E. Palade A Cytochemical Study on the Pancreas of
the Guinea Pig . . . . . . . . . . . . . 203
Aaron J. Ladman and
William C. Young An Electron Microscopic Study of the
Ductuli Efferentes and Rete Testis of
the Guinea Pig . . . . . . . . . . . . . 219
William H. Miller Derivatives of Cilia in the Distal Sense
Cells of the Retina of Pecten . . . . . 227
J. G. Lafontaine A Particulate Component Found in
Nucleoli of \bionameAllium cepa and
\bionameVicia faba . . . . . . . . . . . 229
Maurice C. Davies and
R. Wallace The Use of Carbon Films in the Culture
of Tissue Cells for Electron Microscopy 231
Lee D. Peachey Thin Sections . . . . . . . . . . . . . 233
Ernst J. Dornfeld and
Alfred Owczarzak Surface Responses in Cultured
Fibroblasts Elicited by
Ethylenediaminetetraacetic Acid . . . . 243
George A. Edwards and
Helmut Ruska and
Étienne de Harven Neuromuscular Junctions in Flight and
Tymbal Muscles of the Cicada . . . . . . 251
Philip C. Fitz-James Cytological and Chemical Studies of the
Growth of Protoplasts of Bacillus
megaterium . . . . . . . . . . . . . . . 257
August Ruthmann Basophilic Lamellar Systems in the
Crayfish Spermatocyte . . . . . . . . . 267
Tadashi Tsujii and
D. Gordon Sharp and
Karl M. Wilbur Studies on Shell Formation . . . . . . . 275
Norimitsu Watabe and
D. Gordon Sharp and
Karl M. Wilbur Studies on Shell Formation . . . . . . . 281
J. D. Lever and
J. B. Chappell Mitochondria Isolated from Rat Brown
Adipose Tissue and Liver . . . . . . . . 287
Henry Finck An Electron Microscope Study of
Basophile Substances of Frozen--Dried
Rat Liver . . . . . . . . . . . . . . . 291
Frances Kallman and
Robley C. Williams and
Renato Dulbecco and
Marguerite Vogt Fine Structure of Changes Produced in
Cultured Cells Sampled at Specified
Intervals During a Single Growth Cycle
of Polio Virus . . . . . . . . . . . . . 301
Philip Siekevitz and
George E. Palade A Cytochemical Study on the Pancreas of
the Guinea Pig . . . . . . . . . . . . . 309
Thomas J. Mende and
Edward L. Chambers Studies on Solute Transfer in the
Vascular Endothelium . . . . . . . . . . 319
Edouard Kellenberger and
Antoinette Ryter Cell Wall and Cytoplasmic Membrane of
\bionameEscherichia coli . . . . . . . . 323
Walter J. Runge and
Robert L. Vernier and
J. Francis Hartmann A Staining Method for Sections of
Osmium--Fixed, Methacrylate--Embedded
Tissue . . . . . . . . . . . . . . . . . 327
Eichi Yamada A Peculiar Lamellated Body Observed in
the Cells of the Pigment Epithelium of
the Retina of the Bat, Pipistrellus
abramus . . . . . . . . . . . . . . . . 329
G. W. Grigg and
H. Hoffman A Double Imbedding Method Giving
Water--Permeable Ultrathin Sections for
Electron Microscopy . . . . . . . . . . 331
Mario M. Sampaio and
Adolfo Brunner and
Benedito Oliveira Filho Aspects of the Ultrastructure of the
Brush Border of the Kidney of Normal
Mouse . . . . . . . . . . . . . . . . . 335
W. Duane Belt The Origin of Adrenal Cortical
Mitochondria and Liposomes: a
Preliminary Report . . . . . . . . . . . 337
T. Andrew Quilliam New Problems in the Functional Activity
of the Pacinian Corpuscle . . . . . . . 341
L. T. Threadgold and
R. A. R. Gresson An Electron Microscope Study of the
Cells Lining the Small Blood Vessels of
Helix pomatia Linn . . . . . . . . . . . 342
Peter G. Satir and
Lee D. Peachey Thin Sections . . . . . . . . . . . . . 345
J. David Robertson Structural Alterations in Nerve Fibers
Produced by Hypotonic and Hypertonic
Solutions . . . . . . . . . . . . . . . 349
Sheldon Wolff and
K. C. Atwood and
M. L. Randolph and
H. E. Luippold Factors Limiting the Number of
Radiation--Induced Chromosome Exchanges 365
Gaston de Lamirande and
Claude Allard and
Antonio Cantero Intracellular Distribution of 5'
Nucleotidase in Rat Liver . . . . . . . 373
G. Setterfield and
S. T. Bayley Arrangement of Cellulose Microfibrils in
Walls of Elongating Parenchyma Cells . . 377
John W. Woodard Intracellular Amounts of Nucleic Acids
and Protein During Pollen Grain Growth
in \bionameTradescantia . . . . . . . . 383
David A. Hungerford and
Marie DiBerardino Cytological Effects of Prefixation
Treatment . . . . . . . . . . . . . . . 391
Huntington Sheldon and
Robert A. Robinson Studies on Cartilage: Electron
Microscope Observations on Normal Rabbit
Ear Cartilage . . . . . . . . . . . . . 401
Mortimer L. Mendelsohn The Two--Wavelength Method of
Microspectrophotometry . . . . . . . . . 407
Mortimer L. Mendelsohn The Two--Wavelength Method of
Microspectrophotometry . . . . . . . . . 415
Mortimer L. Mendelsohn The Two--Wavelength Method of
Microspectrophotometry . . . . . . . . . 425
John A. Bergeron and
Marcus Singer Metachromasy: an Experimental and
Theoretical Reevaluation . . . . . . . . 433
Aaron J. Ladman The Fine Structure of the Rod--Bipolar
Cell Synapse in the Retina of the Albino
Rat . . . . . . . . . . . . . . . . . . 459
Marvin M. Nachlas and
Donald G. Walker and
Arnold M. Seligman The Histochemical Localization of
Triphosphopyridine Nucleotide Diaphorase 467
Michael L. Watson Staining of Tissue Sections for Electron
Microscopy with Heavy Metals . . . . . . 475
Joseph G. Gall and
Lois B. Bjork The Spermatid Nucleus in Two Species of
Grasshopper . . . . . . . . . . . . . . 479
George D. Pappas and
Philip W. Brandt The Fine Structure of the Contractile
Vacuole in Ameba . . . . . . . . . . . . 485
Carolyn Cohen The Lotmar--Picken Substance: Taurine 489
Lucien G. Caro and
Robert P. van Tubergen and
Frederick Forro The Localization of Deoxyribonucleic
Acid in \bionameEscherichia coli . . . . 491
Jean Paul Revel and
Susumu Ito and
Don W. Fawcett Electron Micrographs of Myelin Figures
of Phospholipide Simulating
Intracellular Membranes . . . . . . . . 495
Murray B. Bornstein and
Margaret R. Murray Serial Observations on Patterns of
Growth, Myelin Formation, Maintenance
and Degeneration in Cultures of
New--Born Rat and Kitten Cerebellum . . 499
Paul B. Green Structural Characteristics of Developing
Nitella Internodal Cell Walls . . . . . 505
R. D. Allen and
J. D. Roslansky An Anterior--Posterior Gradient of
Refractive Index in the Ameba and Its
Significance in Ameboid Movement . . . . 517
H. E. Swim and
R. F. Parker The Role of Carbon Dioxide as an
Essential Nutrient for Six Permanent
Strains of Fibroblasts . . . . . . . . . 525
George F. Obland The Fine Structure of the
Interrelationship of Cells in the Human
Epidermis . . . . . . . . . . . . . . . 529
M. A. Epstein A Diamond Knife Holder for Microtomes
Designed to Take Glass Knives . . . . . 539
Werner Straus Colorimetric Analysis with
N,N-Dimethyl-p-phenylenediamine of the
Uptake of Intravenously Injected
Horseradish Peroxidase by Various
Tissues of the Rat . . . . . . . . . . . 541
Juan D. Vial The Early Changes in the Axoplasm during
Wallerian Degeneration . . . . . . . . . 551
Philip Siekevitz and
George E. Palade A Cytochemical Study on the Pancreas of
the Guinea Pig . . . . . . . . . . . . . 557
B. B. Westfall and
E. V. Peppers and
V. J. Evans and
K. K. Sanford and
N. M. Hawkins and
M. C. Fioramonti and
H. A. Kerr and
G. L. Hobbs and
W. R. Earle The Arginase and Rhodanese Activities of
Certain Cell Strains after Long
Cultivation in Vitro . . . . . . . . . . 567
Mary H. Hodge and
George B. Chapman Some Observations on the Fine Structure
of the Sinus Gland of a Land Crab,
Gecarcinus lateralis . . . . . . . . . . 571
J. J. Pasteels and
P. Castiaux and
G. Vandermeerssche Cytochemical Localisations and
Ultrastructure in the Fertilized
Unsegmented Egg of Paracentrotus lividus 575
R. W. Merriam The Contribution of Lower Oxides of
Osmium to the Density of Biological
Specimens in Electron Microscopy . . . . 579
Elizabeth D. Hay The Fine Structure of Blastema Cells and
Differentiating Cartilage Cells in
Regenerating Limbs of Amblystoma Larvae 583
Ned Feder and
Richard L. Sidman Methods and Principles of Fixation by
Freeze--Substitution . . . . . . . . . . 593
S. Bradbury and
G. A. Meek The Fine Structure of the Adipose Cell
of the Leech Glossiphonia complanata . . 603
C. F. Shoenberg An Electron Microscope Study of Smooth
Muscle in Pregnant Uterus of the Rabbit 609
Naoko Kawamura and
Katsuma Dan A Cytochemical Study of the Sulfhydryl
Groups of Sea Urchin Eggs during the
First Cleavage . . . . . . . . . . . . . 615
G. Yasuzumi and
Hiroaki Tanaka Spermatogenesis in Animals as Revealed
by Electron Microscopy . . . . . . . . . 621
Montrose J. Moses The Relation between the Axial Complex
of Meiotic Prophase Chromosomes and
Chromosome Pairing in a Salamander
(\bionamePlethodon cinereus) . . . . . . 633
Philip C. Fitz-James and
I. Elizabeth Young Morphological and Chemical Studies of
the Spores and Parasporal Bodies of
Bacillus laterosporus . . . . . . . . . 639
Eduardo De Robertis and
Hersch M. Gerschenfeld and
Flora Wald Cellular Mechanism of Myelination in the
Central Nervous System . . . . . . . . . 651
Michael H. Ross and
George D. Pappas and
Jonathan T. Lanman and
John Lind Electron Microscope Observations on the
Endoplasmic Reticulum in the Human Fetal
Adrenal . . . . . . . . . . . . . . . . 659
Herbert S. Rosenkranz and
Aaron Bendich On the Nature of the Deoxyribonucleic
Acid--Methyl Green Reaction . . . . . . 663
Harold Koenig Uptake of Adenine-8-C$^{14}$ and
Orotic-6-C$^{14}$ Acid into Nuclear DNA
of Non-Dividing Cells in the Adult
Feline Neuraxis . . . . . . . . . . . . 664
E. De Robertis and
D. Sabatini Mitochondrial Changes in the
Adrenocortex of Normal Hamsters . . . . 667
Edouard Kellenberger and
Antoinette Ryter and
Janine Séchaud Electron Microscope Study of
DNA--Containing Plasms . . . . . . . . . 671
Wallace H. Clark and
Richard G. Hibbs Electron Microscope Studies of the Human
Epidermis The Clear Cell of Masson
(Dendritic Cell or Melanocyte) . . . . . 679
Leonard Napolitano and
Don Fawcett The Fine Structure of Brown Adipose
Tissue in the Newborn Mouse and Rat . . 685
H. E. Karrer The Ultrastructure of Mouse Lung: The
Alveolar Macrophage . . . . . . . . . . 693
R. E. Savage and
Walter Plaut The Effect of HCl Hydrolysis on the
Retention of Thymidine in DNA . . . . . 701
Mortimer L. Mendelsohn and
Brian M. Richards A Comparison of Scanning and
Two--Wavelength Microspectrophotometry 707
Edward Essner and
Alex B. Novikoff and
Bertha Masek Adenosinetriphosphatase and
5-Nucleotidase Activities in the Plasma
Membrane of Liver Cells as Revealed by
Electron Microscopy . . . . . . . . . . 711
Eugene L. Hess and
Saima E. Lagg Calf Thymus Composition. A Comparison of
Differential Centrifugation and Chemical
Fractionation Procedures . . . . . . . . 717
Michael L. Watson Staining of Tissue Sections for Electron
Microscopy with Heavy Metals . . . . . . 727
Arthur Hess The Fine Structure of Nerve Cells and
Fibers, Neuroglia, and Sheaths of the
Ganglion Chain in the Cockroach
(\bionamePeriplaneta americana) . . . . 731
Eduardo De Robertis and
Arnaldo Lasansky Submicroscopic Organization of Retinal
Cones of the Rabbit . . . . . . . . . . 743
D. G. Scarpelli and
R. Hess and
A. G. E. Pearse The Cytochemical Localization of
Oxidative Enzymes . . . . . . . . . . . 747
R. Hess and
D. G. Scarpelli and
A. G. E. Pearse The Cytochemical Localization of
Oxidative Enzymes . . . . . . . . . . . 753
George G. Rose and
C. M. Pomerat and
T. O. Shindler and
J. B. Trunnell A Cellophane--Strip Technique for
Culturing Tissue in Multipurpose Culture
Chambers . . . . . . . . . . . . . . . . 761
Herman W. Spater and
Alex B. Novikoff and
Bertha Masek Adenosinetriphosphatase Activity in the
Cell Membranes of Kidney Tubule Cells 765
Mary L. Petermann and
Mary G. Hamilton The Influence of Age, Sex, Pregnancy,
Starvation, and Other Factors on the
Cytoplasmic Ribonucleoproteins of Rat
Liver . . . . . . . . . . . . . . . . . 771
J. G. Lafontaine Structure and Mode of Formation of the
Nucleolus in Meristematic Cells of Vicia
faba and Allium cepa . . . . . . . . . . 777
Harold Koenig An Autoradiographic Study of Nucleic
Acid and Protein Turnover in the
Mammalian Neuraxis . . . . . . . . . . . 785
Richard W. Schreiber and
Robert E. Duncan A Cytological Analysis of the
Antimetabolite Activity of
5-Hydroxyuracil in Vicia faba Roots . . 793
J. T. Randall and
Sylvia Fitton Jackson Fine Structure and Function in Stentor
polymorphus . . . . . . . . . . . . . . 807
Chiaki Matsui Pathological Cytology of Tobacco Leaf
Infected with Tobacco Mosaic Virus III 831
Frank S. LaBella and
J. H. U. Brown Distribution of Hydrolases among
Anterior Pituitary Cell Fractions
(Anterior Pituitary Hydrolases) . . . . 833
Jerome J. Wolken Retinal Structure. Mollusc Cephalopods:
Octopus, Sepia . . . . . . . . . . . . . 835
Alfred M. Elliott and
John W. Tremor The Fine Structure of the Pellicle in
the Contact Area of Conjugating
\bionameTetrahymena pyriformis . . . . . 839
J. Churg and
W. Mautner and
E. Grishman Silver Impregnation for Electron
Microscopy . . . . . . . . . . . . . . . 841
W. Plaut and
L. Alexander Sagan Incorporation of Thymidine in the
Cytoplasm of Amoeba proteus . . . . . . 843
Philip Siekevitz and
George E. Palade A Cytochemical Study on the Pancreas of
the Guinea Pig . . . . . . . . . . . . . 1
Cecil E. Hall and
Henry S. Slayter The Fibrinogen Molecule: Its Size,
Shape, and Mode of Polymerization . . . 11
Frank S. Labella and
J. H. U. Brown Cell Fractionation of Anterior Pituitary
Glands from Beef and Pig . . . . . . . . 17
Helena H. Benitez and
Margaret R. Murray and
Erwin Chargaff Heteromorphic Change of Adult
Fibroblasts by Ribonucleoproteins . . . 25
Maurice H. Bernstein and
Daniel C. Pease Electron Microscopy of the Tapetum
Lucidum of the Cat . . . . . . . . . . . 35
Sam L. Clark The Ingestion of Proteins and Colloidal
Materials by Columnar Absorptive Cells
of the Small Intestine in Suckling Rats
and Mice . . . . . . . . . . . . . . . . 41
G. Zubay and
M. R. Watson The Absence of Histone in the Bacterium
\bionameEscherichia coli . . . . . . . . 51
M. H. F. Wilkins and
G. Zubay The Absence of Histone in the Bacterium
\bionameEscherichia coli . . . . . . . . 55
Paul O. P. Ts'o and
Clifford S. Sato The Incorporation of Leucine-C$^{14}$
into Microsomal Particles and other
Subcellular Components of the Pea
Epicotyl . . . . . . . . . . . . . . . . 59
George B. Chapman and
Lewis G. Tilney Cytological Studies of the Nematocysts
of Hydra . . . . . . . . . . . . . . . . 69
George B. Chapman and
Lewis G. Tilney Cytological Studies of the Nematocysts
of Hydra . . . . . . . . . . . . . . . . 79
Dan H. Moore and
E. Y. Lasfargues and
Margaret R. Murray and
Cushman D. Haagensen and
E. C. Pollard Correlation of Physical and Biological
Properties of Mouse Mammary Tumor Agent 85
E. Y. Lasfargues and
Dan H. Moore and
Margaret R. Murray and
Cushman D. Haagensen and
E. C. Pollard Production of the Milk Agent in Cultures
of Mouse Mammary Carcinoma . . . . . . . 93
Albert L. Lehninger and
Betty Lou Ray and
Marion Schneider The Swelling of Rat Liver Mitochondria
by Thyroxine and its Reversal . . . . . 97
Albert L. Lehninger and
Marion Schneider Mitochondrial Swelling Induced by
Glutathione . . . . . . . . . . . . . . 109
R. W. Merriam The Origin and Fate of Annulate Lamellae
in Maturing Sand Dollar Eggs . . . . . . 117
Kiyoteru Tokuyasu and
Eichi Yamada Fine Structure of Bacillus subtilis . . 123
Kiyoteru Tokuyasu and
Eichi Yamada Fine Structure of Bacillus subtilis . . 129
Timothy Merz The Effect of Extended Anaerobic
Treatments on the Chromosomes of Vicia
faba . . . . . . . . . . . . . . . . . . 135
Marlene Friedlaender Binggeli Abnormal Intranuclear and Cytoplasmic
Formations Associated with a Chemically
Induced, Transplantable Chicken Sarcoma 143
Keith R. Porter and
George D. Pappas Collagen Formation by Fibroblasts of the
Chick Embryo Dermis . . . . . . . . . . 153
M. S. C. Birbeck and
K. A. Stacey The Use of Novel Supporting Films for
the Electron Microscopy of
Deoxyribosenucleic Acid and Other
Macromolecules . . . . . . . . . . . . . 167
H. Meyer and
L. T. Queiroga An Electron Microscope Study of
Embryonic Heart Muscle Cells Grown in
Tissue Cultures . . . . . . . . . . . . 169
Richard E. Hartman and
Robert B. W. Smith and
Roberta S. Hartman and
Charles E. Butterworth and
Jack M. Molesworth The Electron Microscopy of Human
Intestinal Epithelium Obtained with the
Crosby Intestinal Biopsy Capsule . . . . 171
Abdel F. Baradi and
Geoffrey H. Bourne New Observations on the Alkaline
Glycerophosphatase Reaction in the
Papilla Foliata . . . . . . . . . . . . 173
Stanley Weiner A New Method of Glass Knife Preparation
for Thin--Section Microtomy . . . . . . 175
August Ruthmann The Fine Structure of the Meiotic
Spindle of the Crayfish . . . . . . . . 177
Richard L. Wood and
Charles C. Howard Use of Fine Grain Positive Sheet Film
for Electron Microscopy . . . . . . . . 181
T. S. Foster and
Herbert Stern The Accumulation of Soluble
Deoxyribosidic Compounds in Relation to
Nuclear Division in Anthers of Lilium
longiflorum . . . . . . . . . . . . . . 187
Werner Straus Rapid Cytochemical Identification of
Phagosomes in Various Tissues of the Rat
and their Differentiation from
Mitochondria by the Peroxidase Method 193
Jerome J. Freed and
James L. Engle and
George T. Rudkin and
Jack Schultz Ultraviolet Radiation Effects on Ehrlich
Ascites Tumor Cells . . . . . . . . . . 205
Saul Bader A Cytochemical Study of the Stem Cell
Concept in Specimens of a Human Ovarian
Tumor . . . . . . . . . . . . . . . . . 217
Virginia C. Littau Cytological Evidence that Both RNA and
DNA May Form a Complex with the Same
Protein . . . . . . . . . . . . . . . . 231
M. T. M. Rizki and
Rose M. Rizki Functional Significance of the Crystal
Cells in the Larva of \bionameDrosophila
melanogaster . . . . . . . . . . . . . . 235
George A. Edwards The Fine Structure of a Multiterminal
Innervation of an Insect Muscle . . . . 241
Arnaldo Lasansky and
Eduardo De Robertis Submicroscopic Changes in Visual Cells
of the Rabbit Induced by Iodoacetate . . 245
Charles U. Lowe and
Harold Box and
P. R. Venkataraman and
D. S. Sarkaria Cytophotometric Study of
Deoxyribonucleic Acid in
Cortisone--Treated Rat Hepatocytes . . . 251
E. H. Mercer and
P. C. J. Brunet The Electron Microscopy of the Left
Colleterial Gland of the Cockroach . . . 257
I. Friedmann Electron Microscope Observations on in
Vitro Cultures of the Isolated Fowl
Embryo Otocyst . . . . . . . . . . . . . 263
Björn Afzelius Electron Microscopy of the Sperm Tail
Results Obtained with a New Fixative . . 269
Mark J. Hannibal and
Marvin M. Nachlas Further Studies on the Lyo and Desmo
Components of Several Hydrolytic Enzymes
and Their Histochemical Significance . . 279
Marcia Brody and
Albert E. Vatter Observations on Cellular Structures of
Porphyridium cruentum . . . . . . . . . 289
Joseph G. Gall Macronuclear Duplication in the Ciliated
Protozoan Euplotes . . . . . . . . . . . 295
Joseph Cascarano and
Benjamin W. Zweifach Factors Influencing the Histochemical
Demonstration of Coenzyme--Dependent
Dehydrogenases and Diaphorases . . . . . 309
Endre A. Balazs and
John A. Szirmai and
Gudrun Bergendahl C$^{14}$ Assays and Autoradiographic
Studies on the Rooster Comb . . . . . . 319
J. Roberto Sotelo and
Keith R. Porter An Electron Microscope Study of the Rat
Ovum . . . . . . . . . . . . . . . . . . 327
Patricia Harris and
Daniel Mazia The Use of Mercuric Bromphenol Blue as a
Stain for Electron Microscopy . . . . . 343
O. Trujillo-Cenóz and
J. Roberto Sotelo Relationships of the Ovular Surface with
Follicle Cells and Origin of the Zona
Pellucida in Rabbit Oocytes . . . . . . 347
B. A. Kihlman On the Radiomimetic Effects of Cupferron
and Potassium Cyanide . . . . . . . . . 351
Hans A. Went Some Immunochemical Studies on the
Mitotic Apparatus of the Sea Urchin . . 353
Sanford L. Palay and
Leonard J. Karlin An Electron Microscopic Study of the
Intestinal Villus . . . . . . . . . . . 363
Sanford L. Palay and
Leonard J. Karlin An Electron Microscopic Study of the
Intestinal Villus . . . . . . . . . . . 373
Stanley W. Strunk The Formation of Intracellular Crystals
in Midgut Glands of Limnoria lignorum 385
D. E. Copeland and
A. J. Dalton An Association between Mitochondria and
the Endoplasmic Reticulum in Cells of
the Pseudobranch Gland of a Teleost . . 393
L. D. Hamilton and
R. K. Barclay and
M. H. F. Wilkins and
G. L. Brown and
H. R. Wilson and
D. A. Marvin and
H. Ephrussi-Taylor and
N. S. Simmons Similarity of the Structure of DNA from
a Variety of Sources . . . . . . . . . . 397
Harrison Latta A Cellular Reaction to Antibody in
Tissue Culture Studied with Electron
Microscopy . . . . . . . . . . . . . . . 405
G. B. Wilson and
J. H. Morrison and
N. Knobloch Studies on the Control of Mitotic
Activity in Excised Roots . . . . . . . 411
Donald W. King and
Edward L. Socolow and
Klaus G. Bensch The Relation between Protein Synthesis
and Lipide Accumulation in L Strain
Cells and Ehrlich Ascites Cells . . . . 421
Tetsuo Fukuda and
George B. Koelle The Cytological Localization of
Intracellular Neuronal
Acetylcholinesterase . . . . . . . . . . 433
David B. Slautterback and
Don W. Fawcett The Development of the Cnidoblasts of
Hydra . . . . . . . . . . . . . . . . . 441
Don W. Fawcett and
Susumu Ito and
David Slautterback The Occurrence of Intercellular Bridges
in Groups of Cells Exhibiting
Synchronous Differentiation . . . . . . 453
Rachel McMaster-Kaye and
J. Herbert Taylor The Metabolism of Chromosomal
Ribonucleic Acid in \bionameDrosophila
Salivary Glands and its Relation to
Synthesis of Desoxyribonucleic Acid . . 461
Janine Séchaud and
Antoinette Ryter and
Edouard Kellenberger Considérations quantitatives sur des
coupes ultraminces de bactéries infectées
par un bactériophage . . . . . . . . . . 469
B. A. Kihlman The Effect of Respiratory Inhibitors and
Chelating Agents on the Frequencies of
Chromosomal Aberrations Produced by
X--Rays in Vicia . . . . . . . . . . . . 479
Walther Stoeckenius An Electron Microscope Study of Myelin
Figures . . . . . . . . . . . . . . . . 491
W. Gordon Whaley and
Hilton H. Mollenhauer and
Joyce E. Kephart The Endoplasmic Reticulum and the Golgi
Structures in Maize Root Cells . . . . . 501
Mary Ann Gavin and
Bolivar J. Lloyd Knives of High Silica Content Glass for
Thin--Sectioning . . . . . . . . . . . . 507
Sergio A. Bencosme and
Robert S. Stone and
Harrison Latta and
Sidney C. Madden A Rapid Method for Localization of
Tissue Structures or Lesions for
Electron Microscopy . . . . . . . . . . 508
Lee D. Peachey A Device for Staining Tissue Sections
for Electron Microscopy . . . . . . . . 511
William G. Banfield Dense Granule in the Elementary Body of
Molluscum Contagiosum . . . . . . . . . 513
Lester Goldstein and
Julie Micou Nuclear-Cytoplasmic Relationships in
Human Cells in Tissue Culture . . . . . 1
Etienne de Harven and
Christian Coërs Electron Microscope Study of the Human
Neuromuscular Junction . . . . . . . . . 7
Ellen Rasch and
Hewson Swift and
Richard M. Klein Nucleoprotein Changes in Plant Tumor
Growth . . . . . . . . . . . . . . . . . 11
Miriam M. Salpeter and
Marcus Singer The Fine Structure of the Adepidermal
Reticulum in the Basal Membrane of the
Skin of the Newt, Triturus . . . . . . . 35
Arwyn Charles and
John T. Ingram Electron Microscope Observations of the
Melanocyte of the Human Epidermis . . . 41
J. Brontë Gatenby and
A. J. Dalton Spermiogenesis in Lumbricus herculeus 45
F. B. Johnston and
G. Setterfield and
Herbert Stern The Isolation of Nucleoli from
Ungerminated Pea Embryos . . . . . . . . 53
Herbert Stern and
F. B. Johnston and
G. Setterfield Some Chemical Properties of Isolated Pea
Nucleoli . . . . . . . . . . . . . . . . 57
Kiyoshi Hama Some Observations on the Fine Structure
of the Giant Nerve Fibers of the
Earthworm, Eisenia foetida . . . . . . . 61
J. C. Thaemert Intercellular Bridges as Protoplasmic
Anastomoses between Smooth Muscle Cells 67
Richard G. Hibbs and
Wallace H. Clark Electron Microscope Studies of the Human
Epidermis . . . . . . . . . . . . . . . 71
Stuart W. Smith ''Reticular'' and ``Areticular'' Nissl
Bodies in Sympathetic Neurons of a
Lizard . . . . . . . . . . . . . . . . . 77
George D. Pappas and
Philip W. Brandt Mitochondria . . . . . . . . . . . . . . 85
Philip W. Brandt and
George D. Pappas Mitochondria . . . . . . . . . . . . . . 91
Theodor Wanko and
Mary Ann Gavin Electron Microscope Study of Lens Fibers 97
Maria A. Rudzinska and
William Trager Phagotrophy and Two New Structures in
the Malaria Parasite Plasmodium berghei 103
H. Stanley Bennett and
John H. Luft s -Collidine as a Basis for Buffering
Fixatives . . . . . . . . . . . . . . . 113
P. F. Elbers An Improved Grid--Holder for the Siemens
Electron Microscope . . . . . . . . . . 114
Joseph G. Gall The Nuclear Envelope after KMnO$_4$
Fixation . . . . . . . . . . . . . . . . 115
Max Wachstein and
Elizabeth Meisel The Histochemical Demonstration of
Secretory Capillaries in the Pancreas
with the Aid of Substrate Specific
Phosphatases . . . . . . . . . . . . . . 119
E. G. Gray Electron Microscopy of Neuroglial
Fibrils of the Cerebral Cortex . . . . . 121
J. B. Finean Electron Microscope and X-ray
Diffraction Studies of a Saturated
Synthetic Phospholipide . . . . . . . . 123
M. Spencer The Preparation of Carbon Films for
Electron Microscopy . . . . . . . . . . 125
J. Roberto Sotelo and
O. Trujillo-Cenóz The Fine Structure of an Elementary
Contractile System . . . . . . . . . . . 126
Evelyn Petrushka and
Antonio Giuditta Electron Microscopy of Two Subcellular
Fractions Isolated from Cerebral Cortex
Homogenate . . . . . . . . . . . . . . . 129
Richard M. Eakin and
Jane A. Westfall Fine Structure of the Retina in the
Reptilian Third Eye . . . . . . . . . . 133
Heinz Herrmann and
David S. Love An Autoradiographic Demonstration of the
Effect of the Corneal Epithelium on
Amino Acid Incorporation into the
Insoluble Constituents of the Corneal
Stroma . . . . . . . . . . . . . . . . . 135
Alex B. Novikoff The Proximal Tubule Cell in Experimental
Hydronephrosis . . . . . . . . . . . . . 136
Antonio Ascenzi and
Claudine Fabry Technique for Dissection and Measurement
of Refractive Index of Osteones . . . . 139
Michael L. Watson Further Observations on the Nuclear
Envelope of the Animal Cell . . . . . . 147
R. A. R. Gresson and
L. T. Threadgold A Light and Electron Microscope Study of
the Epithelial Cells of the Gut of
Fasciola hepatica L . . . . . . . . . . 157
Russell J. Barrnett and
George E. Palade Enzymatic Activity in the M Band . . . . 163
Edgar A. Tonna and
Eugene P. Cronkite Histochemical and Autoradiographic
Studies on the Effects of Aging on the
Mucopolysaccharides of the Periosteum 171
N. R. Silvester and
R. E. Burge A Quantitative Estimation of the Uptake
of Two New Electron Stains by the
Cytoplasmic Membrane of Ram Sperm . . . 179
Maimon Nasatir and
Herbert Stern Changes in the Activities of Aldolase
and of D -Glyceraldehyde-3-Phosphate
Dehydrogenase during the Mitotic Cycle
in Microspores of Lilium longiflorum . . 189
Edwin W. Taylor Dynamics of Spindle Formation and Its
Inhibition by Chemicals . . . . . . . . 193
Leonard F. Bélanger Alpharadiography: a Simple Method for
Determination of Mass Concentration in
Cells and Tissues . . . . . . . . . . . 197
David M. Prescott Nuclear Synthesis of Cytoplasmic
Ribonucleic Acid in Amoeba proteus . . . 203
Colvin M. Redman and
Lowell E. Hokin Phospholipide Turnover in Microsomal
Membranes of the Pancreas during Enzyme
Secretion . . . . . . . . . . . . . . . 207
Joseph Cascarano and
Benjamin W. Zweifach In Vitro Studies of the Metabolism of
Tissue Slices . . . . . . . . . . . . . 215
George B. Chapman Electron Microscope Observations on the
Behavior of the Bacterial Cytoplasmic
Membrane During Cellular Division . . . 221
Kiyoteru Tokuyasu and
Eichi Yamada The Fine Structure of the Retina Studied
with the Electron Microscope . . . . . . 225
Marcel Bessis and
Janine Breton-Gorius Differents aspects du fer dans
l'organisme . . . . . . . . . . . . . . 231
Marcel Bessis and
Janine Breton-Gorius Differents aspects du fer dans
l'organisme . . . . . . . . . . . . . . 237
Henry Tedeschi The Structure of the Mitochondrial
Membrane: Inferences from Permeability
Properties . . . . . . . . . . . . . . . 241
Leonard L. Ross Electron Microscopic Observations of the
Carotid Body of the Cat . . . . . . . . 253
Ellen Rasch and
John W. Woodard Basic Proteins of Plant Nuclei during
Normal and Pathological Cell Growth . . 263
Donald D. Hickman and
Albert W. Frenkel The Structure of Rhodospirillum rubrum 277
Albert W. Frenkel and
Donald D. Hickman Structure and Photochemical Activity of
Chlorophyll--Containing Particles from
Rhodospirillum rubrum . . . . . . . . . 285
Gaston de Lamirande and
Claude Allard and
Antonio Cantero Ribonucleic Acid Composition in
Cytoplasmic Fractions Isolated from Rat
Liver Cells . . . . . . . . . . . . . . 291
M. Rabinovitch and
I. Vugman Autoradiographic Observations on the
Silk Glands of Bombix mori . . . . . . . 293
Norwin H. Becker and
Kazuo Ogawa Changes in Desoxyribose Nucleic Acid per
Nucleus in Renal Compensatory
Hypertrophy in the Rat . . . . . . . . . 295
David Danon and
Yehuda Marikovsky A Method for Avoiding Centrifugation in
the Imbedding of Suspensions in
Polymethacrylates . . . . . . . . . . . 298
Lester Goldstein and
Julie Micou On the Primary Site of Nuclear RNA
Synthesis . . . . . . . . . . . . . . . 301
K. Tokuyasu and
S. Okamura A New Method for Making Glass Knives for
Thin Sectioning . . . . . . . . . . . . 305
D. H. Howling and
P. J. Fitzgerald The Nature, Significance, and Evaluation
of the Schwarzschild--Villiger (SV)
Effect in Photometric Procedures . . . . 313
Dale Steffensen and
John A. Bergeron Autoradiographs of Pollen Tube Nuclei
with Calcium-45 . . . . . . . . . . . . 339
R. L. Wood Intercellular Attachment in the
Epithelium of Hydra As Revealed by
Electron Microscopy . . . . . . . . . . 343
R. W. Merriam Permeability and Structural
Characteristics of Isolated Nuclei from
Chaetopterus Eggs . . . . . . . . . . . 353
William J. Williams and
Edna Larson and
Theodore L. Phillips A Neoplastic Connective Tissue Mast Cell
Capable of Continuous Growth In Tissue
Culture . . . . . . . . . . . . . . . . 361
A. V. Grimstone Cytoplasmic Membranes and the Nuclear
Membrane in the Flagellate Trichonympha 369
Frances Kallman and
John M. Adams and
Robley C. Williams and
David T. Imagawa Fine Structure of Cellular Inclusions in
Measles Virus Infections . . . . . . . . 379
H. E. Karrer The Striated Musculature of Blood
Vessels . . . . . . . . . . . . . . . . 383
R. G. Kleinfeld and
E. von Haam Effect of Thioacetamide on Rat Liver
Regeneration . . . . . . . . . . . . . . 393
Gerard M. Lehrer and
Leonard Ornstein A Diazo Coupling Method for the Electron
Microscopic Localization of
Cholinesterase . . . . . . . . . . . . . 399
C. E. Hall and
A. Nisonoff and
H. S. Slayter Electron Microscopic Observations of
Rabbit Antibodies . . . . . . . . . . . 407
Irene Manton Observations on the Microanatomy of the
Spermatozoid of the Bracken Fern
(\bionamePteridium aquilinum) . . . . . 413
Ronald H. Locker Striation Patterns of Ox Muscle in Rigor
Mortis . . . . . . . . . . . . . . . . . 419
A. J. Shatkin and
E. L. Tatum Electron Microscopy of
\bionameNeurospora crassa Mycelia . . . 423
Elizabeth H. Leduc and
J. Walter Wilson An Electron Microscope Study of
Intranuclear Inclusions in Mouse Liver
and Hepatoma . . . . . . . . . . . . . . 427
Hilton H. Mollenhauer Permanganate Fixation of Plant Cells . . 431
Robert D. Allen and
John D. Roslansky The Consistency of Ameba Cytoplasm and
Its Bearing on the Mechanism of Ameboid
Movement . . . . . . . . . . . . . . . . 437
Hans A. Went Studies on the Mitotic Apparatus of the
Sea Urchin by Means of Antigen--Antibody
Reactions in Agar . . . . . . . . . . . 447
A. Lima-de-Faria Differential Uptake of Tritiated
Thymidine into Hetero- and Euchromatin
in \bionameMelanoplus and \bionameSecale 457
I. Elizabeth Young and
Philip C. Fitz-James Chemical and Morphological Studies of
Bacterial Spore Formation . . . . . . . 467
I. Elizabeth Young and
Philip C. Fitz-James Chemical and Morphological Studies of
Bacterial Spore Formation . . . . . . . 483
I. Elizabeth Young and
Philip C. Fitz-James Chemical and Morphological Studies of
Bacterial Spore Formation . . . . . . . 499
Kurt Mühlethaler and
Albert Frey-Wyssling Entwicklung und Struktur der
Proplastiden. (German) [Development and
Structure of Proplastids] . . . . . . . 507
Emma Shelton and
A. J. Dalton Electron Microscopy of Emperipolesis . . 513
Audrey M. Glauert and
D. A. Hopwood A Membranous Component of the Cytoplasm
in \bionameStreptomyces coelicolor . . . 515
Eichi Yamada A Crystalline Body Found in the Rod
Inner Segment of the Frog's Eye . . . . 517
Toichiro Kuwabara and
David G. Cogan Experimental Lipogenesis by Purkinje
Fibers . . . . . . . . . . . . . . . . . 519
M. A. Epstein Observations on the Fine Structure of
Type 5 Adenovirus . . . . . . . . . . . 523
Norman M. Case Hemosiderin Granules in the Choroid
Plexus . . . . . . . . . . . . . . . . . 527
Goetz W. Richter Internal Structure of Apoferritin as
Revealed by the ``Negative Staining
Technique.'' . . . . . . . . . . . . . . 531
Richard Holmes Long-Term Cultivation of Human Cells
(Chang) in Chemically Defined Medium and
Effect of Added Peptone Fractions . . . 535
J. R. Rowley and
K. Mühlethaler and
A. Frey-Wyssling A Route for the Transfer of Materials
Through the Pollen Grain Wall . . . . . 537
Michael B. Gregg and
Councilman Morgan Reduplication of Nuclear Membranes in
HeLa Cells Infected with Adenovirus . . 539