This journal provides immediate access to some articles. Volume 70(2); February 1973 Biological Sciences: Biochemistry Hydrophobicity of Long Chain n-Alkyl Carboxylic Acids, as Measured by Their Distribution Between Heptane and Aqueous Solutions PMCID: PMC433241 Detection of a Free Radical in the Primary Reaction of Chloroplast Photosystem II PMCID: PMC433242 Alteration of the Relative Stability of dA·dT and dG·dC Base Pairs in DNA PMCID: PMC433243 Fructose 1,6-Bisphosphatase: The Role of Lysosomal Enzymes in the Modification of Catalytic and Structural Properties PMCID: PMC433244 Identification of the Synthesis of Guanosine Tetraphosphate (MS I) as Insertion of a Pyrophosphoryl Group into the 3′-Position in Guanosine 5′-Diphosphate PMCID: PMC433245 Activation of a Proteolytic System by a Membrane Lipoprotein: Mechanism of Action of Tissue Factor PMCID: PMC433246 In Vitro Repression of the Transcription of gal Operon by Purified gal Repressor PMCID: PMC433252 Reduction of Acetylene and Hydrazine with a Molybdenum-Glutathione Complex PMCID: PMC433253 Phosphorylation of Ribosomal Proteins by Substrate-Specific Protein Kinases from Rabbit Reticulocytes PMCID: PMC433262 Biological Activities of Synthetic Peptides Corresponding to Fragments of and to the Entire Sequence of the Vasoactive Intestinal Peptide PMCID: PMC433264 Regulation of Macromolecular Biosynthesis in a Mutant of Escherichia coli Defective in Membrane Phospholipid Biosynthesis PMCID: PMC433265 Evidence for 30-40S RNA as Precursor of the 60-70S RNA of Rous Sarcoma Virus PMCID: PMC433269 RNA-Linked Short DNA Fragments During Polyoma Replication PMCID: PMC433271 Regulation of the Expression of the N Gene of Bacteriophage Lambda PMCID: PMC433273 Temperature Adaptation of Enzymes: Roles of the Free Energy, the Enthalpy, and the Entropy of Activation PMCID: PMC433275 Purification of 14S Messenger RNA of Immunoglobulin Light Chain That Codes for a Possible Light-Chain Precursor PMCID: PMC433280 Illicit Transport: The Oligopeptide Permease PMCID: PMC433281 Translation of Rabbit Hemoglobin Messenger RNA In Vitro with Purified and Partially Purified Components from Brain or Liver of Different Species PMCID: PMC433283 Mechanism of Action of Ribonuclease H Isolated from Avian Myeloblastosis Virus and Escherichia coli PMCID: PMC433284 Adenosine 3′:5′-Cyclic Monophosphate as a Regulator of Bacterial Transformation PMCID: PMC433285 Solvent Proton Magnetic Relaxation Dispersion in Solutions of Concanavalin A PMCID: PMC433286 Insulin-Like Activity of Concanavalin A and Wheat Germ Agglutinin—Direct Interactions with Insulin Receptors PMCID: PMC433288 Isolation of a New RNA Polymerase-Binding Protein from Sporulating Bacillus subtilis PMCID: PMC433289 Separation of Specific Segments of Transforming DNA after Treatment with Endodeoxyribonuclease PMCID: PMC433292 Hydroxyphenylazopyrimidines: Characterization of the Active Forms and Their Inhibitory Action on a DNA Polymerase from Bacillus subtilis PMCID: PMC433294 Influence of Leaving-Group Electronic Effect on α-Chymotrypsin: Catalytic Constants of Specific Substrates PMCID: PMC433295 The Reverse Turn as a Polypeptide Conformation in Globular Proteins PMCID: PMC433301 Nicotinic Acid as a Ligand Affecting Leghemoglobin Structure and Oxygen Reactivity PMCID: PMC433307 Isolation of Substances That Stimulate RNA Synthesis from Red Kidney Bean: Their Activities in Lymphocytes and Escherichia coli PMCID: PMC433308 RNA Initiation with Dinucleoside Monophosphates during Transcription of Bacteriophage T4 DNA with RNA Polymerase of Escherichia coli PMCID: PMC433309 Biological Sciences: Botany 8-Bromoadenosine 3′:5′-Cyclic Monophosphate as a Promoter of Cell Division in Excised Tobacco Pith Parenchyma Tissue PMCID: PMC433279 Biological Sciences: Cell Biology Mutations Affecting the Structure of Hypoxanthine: Guanine Phosphoribosyltransferase in Cultured Chinese Hamster Cells PMCID: PMC433248 Control of Normal Differentiation of Myeloid Leukemic Cells to Macrophages and Granulocytes PMCID: PMC433254 Surface Changes in Temperature-Sensitive Simian Virus 40-Transformed Cells PMCID: PMC433255 Mitochondrial Protein Synthesis: RNA with the Properties of Eukaryotic Messenger RNA PMCID: PMC433256 Secretion and Extracellular Processing of Procollagen by Cultured Human Fibroblasts PMCID: PMC433259 Effect of Environmental pH on Rescue of Simian Virus 40 PMCID: PMC433260 A Factor from a Transformed Cell Line That Affects Cell Migration PMCID: PMC433261 Temperature-Sensitive Variants of an Established Myoblast Line PMCID: PMC433274 Structure and Development of Neuronal Connections in Isogenic Organisms: Cellular Interactions in the Development of the Optic Lamina of Daphnia PMCID: PMC433276 Evidence for Transport of 75S RNA from a Discrete Chromosome Region via Nuclear Sap to Cytoplasm in Chironomus tentans PMCID: PMC433278 Specification of Positional Information in Retinal Ganglion Cells of Xenopus: Assays for Analysis of the Unspecified State PMCID: PMC433293 Biological Sciences: Genetics Expression of Differentiated Functions in Hepatoma Cell Hybrids: Alanine Aminotransferase PMCID: PMC433263 Three Adjacent Transfer RNA Genes in Escherichia coli PMCID: PMC433277 Chromosomal Control of Mating Activity in Drosophila pseudoobscura PMCID: PMC433282 A Proposal for the Structure of the Drosophila Genome PMCID: PMC433300 Biological Sciences: Immunology Appearance in Trypsinized Normal Cells of Reactivity with Antibody Presumably Specific for Malignant Cells PMCID: PMC433249 Purification of Hodgkin's Disease Tumor-Associated Antigens PMCID: PMC433268 Induction of Immunoglobulin M Synthesis and Secretion in Bone-Marrow-Derived Lymphocytes by Locally Concentrated Concanavalin A PMCID: PMC433272 Crossreactive Antigens on Human Cells Infected with Rauscher Leukemia Virus and on Human Acute Leukemia Cells PMCID: PMC433290 Biological Sciences: Medical Sciences Effect of Stimulation of the Host Defense System by Coenzyme Q10 on Dibenzpyrene-Induced Tumors and Infection with Friend Leukemia Virus in Mice PMCID: PMC433266 Terminal Deoxynucleotidyl Transferase in a Case of Childhood Acute Lymphoblastic Leukemia PMCID: PMC433296 Radioimmunoassay for Human Alpha1-Fetoprotein PMCID: PMC433297 Cystic Fibrosis: Fractionation of Fibroblast Media Demonstrating Ciliary Inhibition PMCID: PMC433303 Detection of Hepatic Phenylalanine 4-Hydroxylase in Classical Phenylketonuria PMCID: PMC433304 Biological Sciences: Microbiology The Labyrinthine Sense Organs of the Frog PMCID: PMC433291 Mechanism of Interferon Uptake in Parental and Somatic Monkey-Mouse Hybrid Cells PMCID: PMC433305 Biological Sciences: Psychology Cycloheximide and Acetoxycycloheximide: Inhibition of Tyrosine Hydroxylase Activity and Amnestic Effects PMCID: PMC433257 Cytoplasmic Adenylation and Processing of Maternal RNA PMCID: PMC433270 Biological Sciences: Zoology Microinjection of Rabbit Hemoglobin Messenger RNA into Amphibian Oocytes and Embryos PMCID: PMC433302 National Academy of Sciences Autumn Meeting (October 1972): Symposium: New Accelerators The Clinton P. Anderson Meson Physics Facility (LAMPF) PMCID: PMC433314 Colliding Beams Versus Beams on Stationary Targets: Competing Tools for Elementary Particle Physics PMCID: PMC433315 CERN Intersecting Storage Rings (ISR) PMCID: PMC433316 National Academy of Sciences Autumn Meeting (October 1972): Symposium: Plant Growth Regulation Plant Productivity and the Control of Photorespiration PMCID: PMC433310 Competition Among Plants PMCID: PMC433311 Ethylene in Plant Growth PMCID: PMC433312 The Use of Protoplasts for Genetic Research PMCID: PMC433313 Physical Sciences: Applied Physical Sciences Downwind and Upwind Effects in the Arizona Cloud-Seeding Experiment PMCID: PMC433258 Physical Sciences: Biochemistry Translation of Bacteriophage Qβ RNA by Cytoplasmic Extracts of Mammalian Cells PMCID: PMC433247 Physical Sciences: Chemistry A Stable Solid Model for Protein Sulfenyl Iodides PMCID: PMC433250 Apparent Helix-Coil Transition for Poly(L-Alanine) as Measured by Nuclear Magnetic Resonance PMCID: PMC433251 Evidence for Boundary Lipid in Membranes PMCID: PMC433287 The Energy of Substituted Ethanes. Asymmetry Orbitals PMCID: PMC433298 p-Algebras of Arbitrary Exponents PMCID: PMC433299 Nuclear Magnetic Resonance Shift Reagents: Abnormal 13C Shifts Produced by Complexation of Lanthanide Chelates with Saturated Amines and n-Butyl Isocyanide PMCID: PMC433306 Physical Sciences: Mathematics “Metodo Rapido” for Finding Real Quadratic Fields of Class-Number 1 PMCID: PMC433267 Corrections Blocking by histones of accessibility to DNA in chromatin: Addition of histones PMCID: PMC433317 Corrects: Blocking by Histones of Accessibility to DNA in Chromatin: Addition of Histones. Proc Natl Acad Sci U S A. 1972 November; 69(11): 3243–3246. Electron paramagnetic resonance of nitrogenase and nitrogenase components from Clostridium pasteurianum W5 and Azotobacter vinelandii OP PMCID: PMC433318 Corrects: Electron Paramagnetic Resonance of Nitrogenase and Nitrogenase Components from Clostridium pasteurianum W5 and Azotobacter vinelandii OP. Proc Natl Acad Sci U S A. 1972 November; 69(11): 3142–3145. Nuclear DNA sequences present in human leukemic cells and absent in normal leukocytes PMCID: PMC433319 Corrects: Nuclear DNA Sequences Present in Human Leukemic Cells and Absent in Normal Leukocytes. Proc Natl Acad Sci U S A. 1972 December; 69(12): 3737–3741. Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||