This journal provides immediate access to some articles. Volume 69(11); November 1972 Biological Sciences: Biochemistry Bidirectional Replication of Simian Virus 40 DNA PMCID: PMC389712 Functional Modification of 16S Ribosomal RNA by Kethoxal PMCID: PMC389716 DNA Modification Methylase Activity of Escherichia coli Restriction Endonucleases K and P PMCID: PMC389721 Electron Paramagnetic Resonance of Nitrogenase and Nitrogenase Components from Clostridium pasteurianum W5 and Azotobacter vinelandii OP PMCID: PMC389722 Bidirectional Transcription and the Regulation of Phage λ Repressor Synthesis PMCID: PMC389725 In Vivo Production of an RNA-DNA Copolymer after Infection of Escherichia coli by Bacteriophage T4 PMCID: PMC389727 Acetylcholine Receptors of Muscle Grown In Vitro PMCID: PMC389730 Structure of the Oxidized Form of a Flavodoxin at 2.5-Å Resolution: Resolution of the Phase Ambiguity by Anomalous Scattering PMCID: PMC389731 Structure of the Radical Form of Clostridial Flavodoxin: A New Molecular Model PMCID: PMC389732 Membrane Site Modified on Induction of the Transformation of Lymphocytes by Periodate PMCID: PMC389737 In Vitro Repair of X-Irradiated DNA Extracted from Bacillus subtilis Deficient in Polymerase I PMCID: PMC389738 Specificity of the Break Produced by Restricting Endonuclease R1 in Simian Virus 40 DNA, as Revealed by Partial Denaturation Mapping PMCID: PMC389739 Cleavage of Bacteriophage f1 DNA by the Restriction Enzyme of Escherichia coli B PMCID: PMC389740 Stimulated Normal Human Lymphocytes Contain a Ribonuclease-Sensitive DNA Polymerase Distinct from Viral RNA-Directed DNA Polymerase PMCID: PMC389742 Conversion of ϕX174 and fd Single-Stranded DNA to Replicative Forms in Extracts of Escherichia coli PMCID: PMC389743 Blocking by Histones of Accessibility to DNA in Chromatin: Addition of Histones PMCID: PMC389745 A Particle Associated with the Polyadenylate Segment in Mammalian Messenger RNA PMCID: PMC389746 Production of Procollagen by Human Fibroblasts in Culture PMCID: PMC389749 Mixed Conformations of Deoxyribonucleic Acid in Chromatin: A Preliminary Report PMCID: PMC389750 The Role of Polyprenol-Bound Saccharides as Intermediates in Glycoprotein Synthesis in Liver PMCID: PMC389751 Coenzymatic Activity of Pyridoxal 5′-Sulfate and Related Analogues of Pyridoxal 5′-Phosphate PMCID: PMC389757 Inactivation of Bovine Trypsinogen and Chymotrypsinogen by Diisopropylphosphorofluoridate PMCID: PMC389761 Translational Control of Hemoglobin Synthesis by an Initiation Factor Required for Recycling of Ribosomes and for their Binding to Messenger RNA PMCID: PMC389762 Mutants of Salmonella typhimurium and Escherichia coli Pleiotropically Defective in Active Transport PMCID: PMC389766 Nonhistone Chromosomal Proteins in Synchronized HeLa Cells PMCID: PMC389768 Covalent Structure of Bovine Neurophysin-II: Localization of the Disulfide Bonds PMCID: PMC389769 Role of the Penicillin-Sensitive Transpeptidation Reaction in Attachment of Newly Synthesized Peptidoglycan to Cell Walls of Micrococcus luteus PMCID: PMC389770 Degradation of DNA RNA Hybrids by Ribonuclease H and DNA Polymerases of Cellular and Viral Origin PMCID: PMC389771 Cleavage of Simian Virus 40 DNA at a Unique Site by a Bacterial Restriction Enzyme PMCID: PMC389772 Cleavage of DNA by R1 Restriction Endonuclease Generates Cohesive Ends PMCID: PMC389773 Enzymatic Oligomerization of Bacteriophage P22 DNA and of Linear Simian Virus 40 DNA PMCID: PMC389777 Existence of Phospholipid Bilayer Structure in the Inner Membrane of Mitochondria PMCID: PMC389782 Conformational Relationships Between Analogs of Acetylcholine and Those of Local Anesthetics in Solution PMCID: PMC389783 On the Primary Nature of Fluorescence Yield Changes Associated with Photosynthesis PMCID: PMC389784 On the Monoheme Character of Cytochromes c′ PMCID: PMC389787 DNA Nucleotide Sequence Restricted by the RI Endonuclease PMCID: PMC389791 Kinetic and Equilibrium Analysis of Estradiol in Uterus: A Model of Binding-Site Distribution in Uterine Cells PMCID: PMC389794 Enzymic Depolymerization of Macromolecular Heparin as a Factor in Control of Lipoprotein Lipase Activity PMCID: PMC389795 Resolution and Reconstitution of the Phosphatidate-Synthesizing System of Rat-Liver Microsomes PMCID: PMC389799 Biological Sciences: Botany Purification of an Ion-Stimulated Adenosine Triphosphatase from Plant Roots: Association with Plasma Membranes PMCID: PMC389760 An Asymbiotic Nitrogen-Fixing Bacterium from the Root Environment of Corn PMCID: PMC389796 Biological Sciences: Cell Biology Temperature-Sensitive Mutants of Escherichia coli Requiring Saturated and Unsaturated Fatty Acids for Growth: Isolation and Properties PMCID: PMC389714 Mammalian Cells with Altered Forms of RNA Polymerase II PMCID: PMC389717 Glucocorticoid Action on Hybrid Clones Derived from Cultured Myeloma and Lymphoma Cell Lines PMCID: PMC389718 Enhancement of RNA Polymerase Activity by a Factor Released by Auxin from Plasma Membrane PMCID: PMC389723 Induction of Neuronal Functions: Acetylcholine-Induced Acetylcholinesterase Activity in Mouse Neuroblastoma Cells PMCID: PMC389726 Biochemical Characterization and Cytochemical Localization of a Catecholamine-Sensitive Adenylate Cyclase in Isolated Capillary Endothelium PMCID: PMC389729 Ribosomal RNA Genes of Neurospora: Isolation and Characterization PMCID: PMC389748 Role of Muscarinic Cholinergic Receptors in Regulation of Guanosine 3′:5′-Cyclic Monophosphate Content in Mammalian Brain, Heart Muscle, and Intestinal Smooth Muscle PMCID: PMC389755 A Molecular Basis for Learning and Memory PMCID: PMC389756 Synthesis of Proteochondroitin Sulfate by Normal, Nanomelic, and 5-Bromodeoxyuridine-Treated Chondrocytes in Cell Culture PMCID: PMC389776 Transfection Mediated by Mycoplasmatales Viral DNA PMCID: PMC389785 Rapid Axoplasmic Transport of Tyrosine Hydroxylase in Relation to Other Cytoplasmic Constituents PMCID: PMC389789 Biological Sciences: Genetics Formation of Hybrids Between Coliphage λ and Salmonella Phage P22 with a Salmonella typhimurium Hybrid Sensitive to These Phages PMCID: PMC389715 Carcinogens as Frameshift Mutagens: Metabolites and Derivatives of 2-Acetylaminofluorene and Other Aromatic Amine Carcinogens PMCID: PMC389719 Genetic Control of α-Glycerolphosphate Dehydrogenase in Mouse Brain PMCID: PMC389728 Precursor and Product in Bacteriophage λ Recombination PMCID: PMC389734 A Mutant of Escherichia coli Defective in DNA Polymerase II Activity PMCID: PMC389744 Genetics of Somatic Mammalian Cells: Demonstration of a Human Esterase Activator Gene Linked to the AdeB Gene PMCID: PMC389752 Autonomy or Nonautonomy of Gene Effects in Mosaics PMCID: PMC389754 Kinetics of Integration of Transforming DNA in Pneumococcus PMCID: PMC389765 Location of Ribosomal DNA in the Human Chromosome Complement PMCID: PMC389778 Induction of Auxotrophic Mutations by Treatment of Chinese Hamster Cells with 5-Bromodeoxyuridine and Black Light PMCID: PMC389793 Fine-Structure Deletion Map of the Escherichia coli L-Arabinose Operon PMCID: PMC389797 Biological Sciences: Immunology Regulation of Lymphocyte Responses In Vitro: Potentiation and Inhibition of Rat Lymphocyte Responses to Antigen and Mitogens by Cytochalasin B PMCID: PMC389747 A DNA-Binding Protein in the Serum of Certain Mammalian Species PMCID: PMC389764 Changes in Intrinsic Circular Dichroism of Several Homogeneous Anti-Type III Pneumococcal Antibodies on Binding of a Small Hapten PMCID: PMC389779 Radioresistance of Carrier-Specific Helper Thymus-Derived Lymphocytes in Mice PMCID: PMC389792 Biological Sciences: Medical Sciences Particles Containing RNA-Instructed DNA Polymerase and Virus-Related RNA in Human Breast Cancers PMCID: PMC389720 A Pressor Substance in the Cerebrospinal Fluid of Normotensive and Hypertensive Patients PMCID: PMC389767 Biological Sciences: Microbiology Processing of Adenovirus RNA Before Release from Isolated Nuclei PMCID: PMC389713 Evidence for a Transcription-Control Region of Simian Virus 40 in the Adenovirus 2—Simian Virus 40 Hybrid, Ad2+ND1 PMCID: PMC389774 Enhancement of Hexose Entry into Chick Fibroblasts by Starvation: Differential Effect on Galactose and Glucose PMCID: PMC389781 Tumorigenicity, Immunogenicity, and Virus Production in Mouse Melanoma Cells Treated with 5-Bromodeoxyuridine PMCID: PMC389790 Biological Sciences: Physiology Specific Glycine-Accumulating Synaptosomes in the Spinal Cord of Rats PMCID: PMC389798 Biological Sciences: Zoology Competition, Competitive Repulsion, and Coexistence PMCID: PMC389724 Biogeographic Kinetics: Estimation of Relaxation Times for Avifaunas of Southwest Pacific Islands PMCID: PMC389735 Physical Sciences: Chemistry Quantum Statistical Theory of Rate Processes PMCID: PMC389733 Nuclear Magnetic Resonance Determination of the Angle Ψ in Peptides PMCID: PMC389736 The Possible Role of Aromatic Residues of Clostridium acidi-urici Ferredoxin in Electron Transport PMCID: PMC389753 Ab Initio Calculations on Large Molecules Using Molecular Fragments. Evidence of Hydrogen Bonding in Polypeptides of Glycine PMCID: PMC389758 One-Parameter Equation of State for Metals and Certain Other Solids PMCID: PMC389759 Nuclear Magnetic Resonance Spectrum of Deamino-Lysine-Vasopressin in Aqueous Solution and Its Structural Implications PMCID: PMC389763 Fluidity: A General Theory PMCID: PMC389786 Some Thermodynamic Relations at the Critical Point in Liquid-Vapor Systems PMCID: PMC389788 Physical Sciences: Geology Thermal Effect in Opal Below Room Temperature PMCID: PMC389741 Physical Sciences: Geophysics Circulation on the Continental Shelf PMCID: PMC389775 Physical Sciences: Mathematics Algebraic Structure of Linear Dynamical Systems. III. Realization Theory Over a Commutative Ring PMCID: PMC389780 Correction Expression of fetal antigens in tumor cells PMCID: PMC389800 Corrects: Expression of Fetal Antigens in Tumor Cells. Proc Natl Acad Sci U S A. 1972 July; 69(7): 1664–1668. 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