This journal provides immediate access to some articles. Volume 59(3); March 1968 INTRODUCTORY REMARKS PMCID: PMC224724 Rates of genetic change under selection. PMCID: PMC224725 Patterns of survival and reproduction in the United States: implications for selection. PMCID: PMC224726 Hirado: temporal trends in inbreeding and fertility. PMCID: PMC224727 The demography of two tribes of primitive, relatively unacculturated American Indians. PMCID: PMC224728 Demographic approaches to the measurement of differential selection in human populations. PMCID: PMC224729 THEORY OF THE PHYSICAL CHARACTERISTICS OF TENSILE FRACTURE UNDER PRESSURE PMCID: PMC224730 SOME NEW CONDITIONS FOR THE STRONG LAW PMCID: PMC224731 SOME CONSEQUENCES OF THE AXIOM OF DEFINABLE DETERMINATENESS PMCID: PMC224732 ASYMPTOTIC NORMALITY OF LINEAR COMBINATIONS OF FUNCTIONS OF ORDER STATISTICS, II PMCID: PMC224733 ON THE JAHN-TELLER EFFECT IN BINUCLEAR CU(II) COMPLEXES PMCID: PMC224734 Nonenzymatic synthesis of oligoadenylates on a polyuridylic acid template. PMCID: PMC224735 ENTROPY BALANCE IN PHOTOSYNTHESIS PMCID: PMC224736 THEORY OF QUANTUM-MECHANICAL DESCRIPTION PMCID: PMC224737 CHEMICAL INDUCTION OF HAPLOID FRUITING BODIES IN Schizophyllum commune PMCID: PMC224738 APOSPOROUS DIPLOID GAMETOPHYTES FROM SPOROPHYTES OF THE LIVERWORT Blasia pusilla L PMCID: PMC224739 Reactions in vivo and in vitro produced by a soluble substance associated with delayed-type hypersensitivity. PMCID: PMC224740 Helical array of polyribosomes. PMCID: PMC224741 The mechanism of internuclear transmission of SV40-induced complement fixation antigen in heterokaryocytes. PMCID: PMC224742 Structure and function of E. coli ribosomes. V. Reconstitution of functionally active 30S ribosomal particles from RNA and proteins. PMCID: PMC224743 Studies in aging. VI. Genes, developmental environment, and the expression of aging processes in Drosophila melanogaster. PMCID: PMC224744 Suppressor gene Su3+ of E. coli, a structural gene for tyrosine TRNA. PMCID: PMC224745 Mechanism of the daily rhythm in hepatic tyrosine transaminase activity: role of dietary tryptophan. PMCID: PMC224746 An electromagnetic catheter flow meter for determination of blood flow in major arteries. PMCID: PMC224750 Effect of phenoxybenzamine on neural and humoral control of sweat glands. PMCID: PMC224753 Photochemical evidence for conformation changes in DNA during germination of bacterial spores. PMCID: PMC224755 Sterochemical features of thymidylyl-photodimerization in the Watson-Crick DNA helix. PMCID: PMC224757 The conformational basis of energy conservation in membrane systems. II. Correlation between conformational change and functional states. PMCID: PMC224758 Cytoplasmic DNA in the unfertilized sea urchin egg: physical properties of circular mitochondrial DNA and the occurrence of catenated forms. PMCID: PMC224760 Molecular hybridization used to characterize the RNA synthesized by isolated bovine thymus nuclei. PMCID: PMC224762 Effect of sparsomycin on protein synthesis in the mouse liver. PMCID: PMC224764 Binding of guanosine 5'-triphosphate by soluble factors required for polypeptide synthesis. PMCID: PMC224766 A kinetic model for bacterial spore germination. PMCID: PMC224768 Specific cleavage of bacteriophage R17 RNA by an endonuclease isolated from E. coli MRE-600. PMCID: PMC224769 Effects of thyroid hormones on adenyl cyclase in adipose tissue and on free fatty acid mobilization. PMCID: PMC224771 On the structure of human serum high-density lipoprotein: studies by the technique of circular dichroism. PMCID: PMC224773 In vitro cultivation of mouse mammary tumor virus: detection of MTV production by radioisotope labeling and identification by immune precipitation. PMCID: PMC224775 The biogenesis of mitochondria. V. Cytoplasmic inheritance of erythromycin resistance in Saccharomyces cerevisiae. PMCID: PMC224776 The process of infection with bacteriophage phi-X174. XXII. Synthesis of progeny single-stranded DNA. PMCID: PMC224778 Inhibition by nigericin of the light-induced pH change in Rhodospirillum rubrum chromatophores. PMCID: PMC224779 T2 DNA-dependent synthesis of bacteriophage-related proteins. PMCID: PMC224781 The RNA of influenza virus. PMCID: PMC224782 Excretion of ketosteroids and proneness to breast cancer. PMCID: PMC224784 On the excitability and cooperativity of the electroplax membrane. PMCID: PMC224785 DNA polymerase: evidence for multiple molecular species. PMCID: PMC224787 The number of iron atoms in the paramagnetic center (G =1.94) of reduced putidaredoxin, a nonheme iron protein. PMCID: PMC224789 Evidence for large precursor proteins in poliovirus synthesis. PMCID: PMC224791 In vitro translation of multistranded RNA from Escherichia coli infected by bacteriophage f-2. PMCID: PMC224793 Effects of anionic steroids and glycolytic intermediates on the catalytic activity, conformation, and stability of phosphorylase B. PMCID: PMC224795 The role of a phosphoenolpyruvate-dependent kinase system in beta-glucoside catabolism in Escherichia coli. PMCID: PMC224796 The time-dependent specific interation of 4-(4'-aminophenylazo)phenylarsonic acid with subtilsins. PMCID: PMC224799 Energy transfer in poly-l-tyrosine as a function of the degree of ionization of the phenolic hydroxyls. II. Electron spin resonance study of the triplet state. PMCID: PMC224801 Biosynthesis of a discrete glycoprotein: bovine luteinizing hormone. PMCID: PMC224802 In vitro repression of phage lambda DNA transcription by a partially purified repressor from lysogenic cells. PMCID: PMC224804 Correction SIMILARITIES IN THE CHEMICAL STRUCTURE OF HUMAN PLACENTAL LACTOGEN AND PITUITARY GROWTH HORMONE PMCID: PMC224806 Corrects: Similarities in the chemical structure of human placental lactogen and pituitary growth hormone. Proc Natl Acad Sci U S A. 1967 December; 58(6): 2307–2314. Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||