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This journal provides immediate access to some articles. Volume 65(4); April 1970 Articles The Appearance and Disappearance of the Post-Transcriptional Repressor of Tyrosine Aminotransferase Synthesis during the HTC Cell Cycle PMCID: PMC283023 Cooperative Effects in Models of Steady-State Transport across Membranes, I PMCID: PMC283024 Template Activity of Liver Chromatin Increased by in Vivo Administration of Insulin PMCID: PMC283025 Translation-Level Control of Amylase and Protein Synthesis by Epinephrine PMCID: PMC283026 SV40-Specific RNA in the Nucleus and Polyribosomes of Transformed Cells PMCID: PMC283027 Formation of All Stable RNA Species in Escherichia coli by Posttranscriptional Modification PMCID: PMC283028 Models of Structure of the Envelope of Influenza Virus PMCID: PMC283029 The Reductive Inactivation of UDPgalactose-4-Epimerase from Yeast and E. coli PMCID: PMC283030 Reaction of Acetyl-α-Chymotrypsin and Other Esters with an Ionizable Nucleophile, Monoisonitrosoacetone PMCID: PMC283031 Biological Sciences: Biochemistry Interconversion of Phospho- and Dephospho- Forms of Pig Heart Pyruvate Dehydrogenase PMCID: PMC283008 Biochemical and Genetic Studies of Recombination Proficiency in Escherichia coli, I. Enzymatic Activity Associated with recB+ and recC+ Genes PMCID: PMC283009 A Mechanism for Penicillinase Secretion in Bacillus licheniformis PMCID: PMC283010 Unified Theory for Gel Electrophoresis and Gel Filtration PMCID: PMC283011 Nicotinic Acid Metabolism, V. A Cobamide Coenzyme-Dependent Conversion of α-Methyleneglutaric Acid to Dimethylmaleic Acid PMCID: PMC283012 Relative Effect of Transcription-Level and Translation-Level Control of Protein Synthesis during Early Development of the Sea Urchin PMCID: PMC283013 Immunochemical Measurement of Double-stranded RNA of Uninfected and Arbovirus-Infected Mammalian Cells PMCID: PMC283014 Induction of Cytochromes in Human Cells by Oxygen PMCID: PMC283015 Ontogeny of Iminoglycine Transport in Mammalian Kidney PMCID: PMC283016 DNA Replication in Mammalian Cells, I. The Size of Newly Synthesized Helices PMCID: PMC283017 Synthetic Spectroscopic Models Related to Coenzymes and Base Pairs, VII. Stacking Interactions in tRNA; the „Bend” at Dimethylguanosine PMCID: PMC283018 Stimulated Formation of Adenosine 3′,5′-Cyclic Phosphate in Cerebral Cortex: Synergism between Electrical Activity and Biogenic Amines PMCID: PMC283019 Deoxynucleotide-Polymerizing Enzymes of Calf Thymus Gland, IV. Inhibition of Terminal Deoxynucleotidyl Transferase by Metal Ligands PMCID: PMC283020 Template Properties of Complementary Fractions of Denatured Microbial Deoxyribonucleic Acids PMCID: PMC283021 On the Prevalence of „Nonspecific” Binding at the Specific Binding Sites of Globular Proteins PMCID: PMC283022 Biological Sciences: Genetics Transcription Initiation in the Histidine Operon of Salmonella typhimurium PMCID: PMC283005 Implications of TL Phenotype Changes in an H-2-Loss Variant of a Transplanted H-2b/H-2a Leukemia PMCID: PMC283006 Studies on Genetic Organization in Higher Organisms, II. Complementation and Fine Structure of the Maroon-like Locus of Drosophila melanogaster PMCID: PMC283007 Biological Sciences: Medical Sciences A Microsurgical Methodology for Human Cells in Vitro: Evolution and Applications PMCID: PMC283003 Stimulation of Mammalian Erythropoiesis by 5β-H Steroid Metabolites PMCID: PMC283004 Biological Sciences: Microbiology Proteins Specified by Herpes Simplex Virus, III. Viruses Differing in Their Effects on the Social Behavior of Infected Cells Specify Different Membrane Glycoproteins PMCID: PMC282996 Biological Sciences: Pathology Renal Damage Associated with Silicon Compounds in Dogs PMCID: PMC282997 Pulse Labeling of RNA of Mammalian Cells PMCID: PMC282998 Biological Sciences: Physiology Nerve Membrane Excitation without Threshold PMCID: PMC282999 Purkinje Cells in the Cerebellum: Their Responses to Postural Stimuli in Cats PMCID: PMC283000 Brain-Cell Protein Synthesis Specifically Related to Learning PMCID: PMC283001 Surface Movements during the Growth of Single Explanted Neurons PMCID: PMC283002 Biological Sciences: Psychology Retrograde Amnesia Gradients by Subconvulsive and High Convulsive Transcranial Currents in Chicks PMCID: PMC282995 Biological Sciences: Zoology Orientation by Untrained Pigeons Requires the Sun PMCID: PMC282994 Physical Sciences: Applied Mathematical Sciences Light Pulse Propagation in Nonlinear Dispersive Medium PMCID: PMC282992 Physical Sciences: Applied Physical Sciences Differential Scatter of Left and Right Circularlay Polarized Light by Optically Active Particulate Systems PMCID: PMC282993 Physical Sciences: Astronomy The [NeIV] Lines in High Excitation Gaseous Nebulae PMCID: PMC282982 Physical Sciences: Chemistry Proton Magnetic Resonance Study of Ferredoxin from Clostridium pasteurianum PMCID: PMC282985 Biotin-Bound CO2 and the Mechanism of Enzymatic Carboxylation Reactions PMCID: PMC282986 Helix Probability Profiles of Denatured Proteins and Their Correlation with Native Structures PMCID: PMC282987 The Anomalous Deuterium Isotope Effect on the Chemical Shift of the Bridge Hydrogen in the Enol Tautomer of 2,4-Pentanedione PMCID: PMC282988 Failure of Energy Transfer between Identical Aromatic Molecules on Excitation at the Long Wave Edge of the Absorption Spectrum PMCID: PMC282989 Physical Sciences: Geology Oxygen-Collagen Priority and the Early Metazoan Fossil Record PMCID: PMC282983 Physical Sciences: Mathematics Mixtures and Characteristic Functions PMCID: PMC282990 Simplifying Intersections of Surfaces PMCID: PMC282991 Physical Sciences: Physics Dynamics of Systems with Large Number of Degrees of Freedom and Generalized Transformation Theory PMCID: PMC282984 Correction Am(1), the First Genetic Marker of Human Immunoglobulin A PMCID: PMC283032 Corrects: AM(1), THE FIRST GENETIC MARKER OF HUMAN IMMUNOGLOBULIN A. Proc Natl Acad Sci U S A. 1969 December; 64(4): 1211–1216. Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||