This journal provides immediate access to some articles. Volume 59(1); January 1968 THE ABUNDANCE OF LEAD IN THE SUN PMCID: PMC285991 DISSIPATIVE PROCESSES, QUANTUM STATES, AND ENTROPY PMCID: PMC285992 CYTOKININS: SYNTHESIS OF 6-(3-METHYL-3-BUTENYLAMINO)-9-β-D-RIBOFURANOSYLPURINE (3IPA), AND THE EFFECT OF SIDE-CHAIN UNSATURATION ON THE BIOLOGICAL ACTIVITY OF ISOPENTYLAMINOPURINES AND THEIR RIBOSIDES PMCID: PMC285993 PREBIOTIC PORPHYRIN GENESIS: PORPHYRINS FROM ELECTRIC DISCHARGE IN METHANE, AMMONIA, AND WATER VAPOR PMCID: PMC285994 ORGANIC GEOCHEMICAL STUDIES, II. A PRELIMINARY REPORT ON THE DISTRIBUTION OF ALIPHATIC HYDROCARBONS IN ALGAE, IN BACTERIA, AND IN A RECENT LAKE SEDIMENT PMCID: PMC285995 STRUCTURE OF THE PHOTOHYDRATION PRODUCTS OF CYTIDINE AND URIDINE PMCID: PMC285996 A TWO-STRUCTURE MODEL FOR ELECTROLYTIC SOLUTIONS PMCID: PMC285997 ON THE MECHANISM OF THYMINE PHOTODIMERIZATION PMCID: PMC285998 RELATIONS BETWEEN TWO KINDS OF THETA CONSTANTS ON A RIEMANN SURFACE PMCID: PMC285999 HOMOGENEOUS COMPLEX MANIFOLDS AND REPRESENTATIONS OF SEMISIMPLE LIE GROUPS PMCID: PMC286000 SOUSLIN'S PROBLEM PMCID: PMC286001 A CONTRIBUTION TO PROFIT MAXIMIZATION PMCID: PMC286002 A human interferon that crosses the species line. PMCID: PMC286003 The in vitro induction of an increase in cell multiplication and cellular life span by the water-soluble carcinogen dimethylnitrosamine. PMCID: PMC286004 The number of cell generations required to fix the transformed state in X-ray-induced transformation. PMCID: PMC286005 Biological consequences of the replacement of choline by ethanolamine in the cell wall of Pneumococcus: chanin formation, loss of transformability, and loss of autolysis. PMCID: PMC286006 Relation of Burkitt's tumor-associated herpes-ytpe virus to infectious mononucleosis. PMCID: PMC286007 Genetic variation in natural island populations of members of the Drosophila nasuta and Drosophila ananassae subgroups. PMCID: PMC286008 The fundamental nature of the genetic code: prebiotic interactions between polynucleotides and polyamino acids or their derivatives. PMCID: PMC286009 Reversal of early thyroid hormone action on mitochondria by bovine serum albumin in vitro. PMCID: PMC286010 Metallocarbonic anhydrases: optical rotatory dispersion and circular dichroism. PMCID: PMC286011 Evidence for long DNA strands in the replicating pool after T4 infection. PMCID: PMC286012 The immediate precursor of viral RNA in the Q-beta-repicase reaction. PMCID: PMC286013 Replication of viral RNA, XVI. Enzymatic synthesis of infectious virual RNA with noninfectious Q-beta minus strands as template. PMCID: PMC286014 Phase transitions in ribonucleic acid synthesis during germination of Bacillus subtilis spores. PMCID: PMC286015 Remarks on sequence characteristics of the DNA and transfer RNA of yeast. PMCID: PMC286016 Phosphorylation of methionine sulfoximine by glutamine synthetase. PMCID: PMC286017 Dependence of "early" lambda bacteriophage RNA synthesis on bacteriophage-directed protein synthesis. PMCID: PMC286018 A stepwise reaction yielding a complex between a supernatant fraction from E. coli, guanosine 5'-triphosphate, and aminoacyl-sRNA. PMCID: PMC286019 An intermediate in the replication of influenza virus RNA. PMCID: PMC286020 Mammalian cell growth proteins. I. Growth stimulation of fetuin. PMCID: PMC286021 Chromatographic resolution of complementary strands of denatured Pneumococcal DNA. PMCID: PMC286022 Multiple isoaccepting transfer RNA's in a muouse plasma cell tumor. PMCID: PMC286023 The reversible dissocation of yeast enolase. PMCID: PMC286024 An enzymatic basis for secretor status and blood group substance specificity in humans. PMCID: PMC286025 Characteristics of cystine and cysteine transport in rat kidney cortex slices. PMCID: PMC286026 The activation of 50S and 30S E. coli ribosomes for polyphenylalanine synthesis. PMCID: PMC286027 Single-stranded, adenine-rich RNA from purified reoviruses. PMCID: PMC286028 Glycolipids of hamster fibroblasts and derived malignant-transformed cell lines. PMCID: PMC286029 Acidic proteins of mammalian nuclei: isolation and characterization. PMCID: PMC286030 Enhancement of RNA synthesis in isolated pea nuclei by gibberellic acid. PMCID: PMC286031 Time of gene expression in relation to centromere distance during the cell cycle of Saccharomyces cereviseae. PMCID: PMC286032 Beta-glucoside permeases and phospho beta-glucosidases in Aerobacter aerogenes: relationship with cryptic phospho beta-glucosidases in Enterobacteriaceae. PMCID: PMC286033 Relative quantum efficiency of visible and infrared light on photosynthetic O2 production. PMCID: PMC286034 Immunological activity of thymus and thoracic-duct lymphocytes. PMCID: PMC286035 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||