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This journal provides immediate access to some articles. Volume 68(1); January 1971 Biological Sciences: Biochemistry The Folded Genome of Escherichia coli Isolated in a Protein-DNA-RNA Complex PMCID: PMC391088 Specificity of the DNA Product of the C-Type Virus RNA-Dependent DNA Polymerase PMCID: PMC391089 Primary Reactions of Photosynthesis: Photoreduction of a Bound Chloroplast Ferredoxin at Low Temperature as Detected by EPR Spectroscopy PMCID: PMC391091 Analysis of the Helical Ribosome Structures of Mycoplasma gallisepticum PMCID: PMC391098 Chemical Modifications of Transfer RNA Species. Desulfurization with Raney Nickel PMCID: PMC391099 Unexpectedly Large Size of Globin Messenger Ribonucleic Acid PMCID: PMC391105 Fatty Acid Synthetase Activity in Mycobacterium phlei: Regulation by Polysaccharides PMCID: PMC391108 Model for Constraint and Control in Biochemical Networks PMCID: PMC391169 Aurintricarboxylic Acid: Inhibitor of Initiation of Protein Synthesis PMCID: PMC391170 DNA of Vegetative Bacteriophage Lambda, VI Electron Microscopic Studies of Replicating Lambda DNA PMCID: PMC391173 Epinephrine-Induced Vacuole Formation in Parotid Gland Cells and Its Independence of the Secretory Process PMCID: PMC391175 Temperature-Sensitive Mutations of the Photosynthetic Apparatus of Rhodospirillum rubum PMCID: PMC391179 Interconvertible Forms of Escherichia coli RNA Polymerase PMCID: PMC391184 Transcription of Nonrepeated DNA in Neonatal and Fetal Mice PMCID: PMC391189 A Rapidly Acting Metabolite of Vitamin D3 PMCID: PMC391190 DNA Polymerase Activities in Virions of Visna Virus, a Causative Agent of a “Slow” Neurological Disease PMCID: PMC391191 Multiple Molecular Species of Escherichia coli DNA Polymerase PMCID: PMC391195 Energy Transfer in Modified DNA PMCID: PMC391196 Strand-Specific Supercoiled DNA-Protein Relaxation Complexes: Comparison of the Complexes of Bacterial Plasmids ColE1 and ColE2 PMCID: PMC391197 An Adenosine 3′:5′-Cyclic Monophosphate-Binding Protein That Acts on the Transcription Process PMCID: PMC391198 Leucyl Transfer RNA Synthetase Changes during Soybean Cotyledon Senescence PMCID: PMC391200 pH as a Determinant of Cellular Growth and Contact Inhibition PMCID: PMC391201 Genes for Neuronal Properties Expressed in Neuroblastoma × L Cell Hybrids PMCID: PMC391202 Biological Sciences: Genetics Lack of Intercellular Suppression of Position-Effect Variegation by Supernumerary Y Chromosomes during Cell Differentiation in Drosophila melanogaster PMCID: PMC391090 Esterase Polymorphism in the Butterfly Hemiargus isola Stability in a Variable Environment PMCID: PMC391096 A Series of Hybrid Cells Containing Different Ratios of Parental Chromosomes Formed by Two Steps of Artificial Fusion PMCID: PMC391097 Partial Enzyme Aggregates Formed by Pleiotropic Mutants in the arom Gene Cluster of Neurospora crassa PMCID: PMC391102 A New Reduced Human-Mouse Somatic Cell Hybrid Containing the Human Gene for Adenine Phosphoribosyltransferase PMCID: PMC391107 Mitotic Separation of Two Human X-Linked Genes in Man—Mouse Somatic Cell Hybrids PMCID: PMC391174 Expression of Differentiated Functions in Hepatoma Cell Hybrids, I. Tyrosine Aminotransferase in Hepatoma-Fibroblast Hybrids PMCID: PMC391177 Dimerization Mutants of Alcohol Dehydrogenase of Maize PMCID: PMC391182 Biological Sciences: Immunology Trypanosoma lewisi Infection in the Rat: Effect of Adenine PMCID: PMC391087 Tetrameric Immune Macroglobulins in Three Orders of Bony Fishes PMCID: PMC391172 Immunofluorescent Evidence for Cellular Control of Synthesis of Variable Regions of Light and Heavy Chains of Immunoglobulins G and M by the Same Gene PMCID: PMC391188 Rate of Somatic Mutation in Immunoglobulin Production by Mouse Myeloma Cells PMCID: PMC391199 Biological Sciences: Medical Sciences Hypoglycin A: A Specific Inhibitor of Isovaleryl CoA Dehydrogenase PMCID: PMC391092 Synthesis of a Biologically Active N-Terminal Tetratriacontapeptide of Parathyroid Hormone PMCID: PMC391103 Radiation Sensitivity of New Zealand Black Mice and the Development of Autoimmune Disease and Neoplasia PMCID: PMC391176 Modulation of Experimental Renal Dysfunction of Hereditary Fructose Intolerance by Circulating Parathyroid Hormone PMCID: PMC391178 The Molecular Defect in a Protein (CRA) Found in γ1 Heavy Chain Disease, and Its Genetic Implications PMCID: PMC391192 A Thrombin-Sensitive Protein of Human Platelet Membranes PMCID: PMC391203 Human Skin Collagenase. The Role of Serum Alpha-Globulins in the Control of Activity In Vivo and In Vitro PMCID: PMC391209 Biological Sciences: Microbiology Production of 19S IgM Antibodies with Restricted Heterogeneity from Sharks PMCID: PMC391180 Nuclear Involvement Poin xvirus Infection PMCID: PMC391187 Cyclic Membrane Changes in Animal Cells: Transformed Cells Permanently Display a Surface Architecture Detected in Normal Cells Only during Mitosis PMCID: PMC391204 Biological Sciences: Physiology Determination of Arterial Blood Flow by Percutaneously Introduced Flow Sensors in an External Magnetic Field, II. Implementation of the Method In Vivo PMCID: PMC391095 The Carotid Body as a Neuroendocrine Organ Involved in Control of Erythropoiesis PMCID: PMC391100 Possible Mechanism of Liver Necrosis Caused by Aromatic Organic Compounds PMCID: PMC391186 Theory of the Voltage Clamp of the Nerve Membrane, I. Ideal Clamp PMCID: PMC391193 Biological Sciences: Psychology Studies on Memory: Distribution of Peptidyl-Puromycin in Subcellular Fractions of Mouse Brain PMCID: PMC391094 Neurotransmitter-Specific Synaptosomes in Rat Corpus Striatum: Morphological Variations* PMCID: PMC391185 Biological Sciences: Zoology Magnets Interfere with Pigeon Homing PMCID: PMC391171 Physical Sciences: Applied Mathematics Stability of Plane Poiseuille Flow to Periodic Disturbances of Finite Amplitude, II PMCID: PMC391194 Physical Sciences: Applied Physical Sciences Further Studies of the Whitetop Cloud-Seeding Experiment PMCID: PMC391183 Physical Sciences: Chemistry Proton Magnetic Resonance Studies of the Ferredoxins from Spinach and Parsley PMCID: PMC391104 Solution of the Time-Dependent Schrödinger Equation by the Laplace Transform Method PMCID: PMC391106 Physical Sciences: Mathematics Lacunarity for Compact Groups PMCID: PMC391093 A Negative Partition Relation PMCID: PMC391181 Physical Sciences: Physics Instabilities of High Temperature Superconductors PMCID: PMC391101 Corrections Possible role of pyrophosphate linkage in the active transport of sodium ions PMCID: PMC391205 Corrects: Possible Role of Pyrophosphate Linkage in the Active Transport of Sodium Ions. Proc Natl Acad Sci U S A. 1970 September; 67(1): 59–61. The time of appearance of cold water off Somalia PMCID: PMC391206 Corrects: THE TIME OF APPEARANCE OF COLD WATER OFF SOMALIA. Proc Natl Acad Sci U S A. 1968 July; 60(3): 750–751. Ion transport underlying metabolically controlled volume changes of isolated mitochondrias PMCID: PMC391207 Corrects: Ion Transport Underlying Metabolically Controlled Volume Changes of Isolated Mitochondria. Proc Natl Acad Sci U S A. 1970 October; 67(2): 702–709. Affinity labeling of the heavy and light chains of a myeloma protein with anti-2,4-dinitrophenyl activity PMCID: PMC391208 Corrects: Affinity Labeling of the Heavy and Light Chains of a Myeloma Protein with Anti-2,4-Dinitrophenyl Activity. Proc Natl Acad Sci U S A. 1970 December; 67(4): 1656–1661. Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||
