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This journal provides immediate access to some articles. Volume 39(8); August 1953 Astronomy Frequency of Separation and of Interlocking of Clusters of Galaxies PMCID: PMC1063851 Bacteriology The Influence of Temperature Upon the Inactivation of a Bacterial Virus By X-Rays PMCID: PMC1063852 Electron Microscopy of the Nucleic Acid Released from Individual Bacteriophage Particles PMCID: PMC1063853 Biochemistry Transfer of C14 By Lupine Mitochondria Through Reactions of the Tricarboxylic Acid Cycle PMCID: PMC1063854 Subcellular Fractionation of Mouse Spleen Radiation Protection Activity PMCID: PMC1063855 The Mechanism of Propionic Acid Formation by Succinate Decarboxylation: I. The Activation of Succinate PMCID: PMC1063856 The Mechanism of Propionic Acid Formation by Succinate Decarboxylation: II. The Formation and Decarboxylation of Succinyl-CoA PMCID: PMC1063857 Chemistry Generalized Mathematical Relationships for Polypeptide Chain Helices: The Coordinates of the II Helix PMCID: PMC1063858 Conductance and Viscosity of Concentrated Aqueous Salt Solutions at 50.5° PMCID: PMC1063859 Genetics Development and Genetics of a Sex-Influenced Trait in the Livers of Mice PMCID: PMC1063860 Mutation Rates and Lethal Gene Frequencies in Populations of Drosophila Melanogaster PMCID: PMC1063861 Anti-f and the “New” Rh Antigen it Defines PMCID: PMC1063862 Further Studies on the Effects of Carbon Dioxide and Oxygen on the Frequency of X-Ray Induced Chromosome Aberrations in Tradescantia PMCID: PMC1063863 Gene Action in Relation to Growth and Development: I. Phenotypic Variability PMCID: PMC1063864 Geophysics Travel Times of Longitudinal Waves From Surface Foci PMCID: PMC1063865 Mathematics Approximate Methods in Mathematics PMCID: PMC1063866 Ergodic Theory of Markov Chains Admitting an Infinite Invariant Measure PMCID: PMC1063867 On Cohomology Groups of Compact Analytic Varieties with Coefficients in Some Analytic Faisceaux PMCID: PMC1063868 Groups of Complex Line Bundles Over Compact Kähler Varieties PMCID: PMC1063869 Divisor Class Groups on Algebraic Varieties PMCID: PMC1063870 Zoology The Growth of Amblystoma Chimeras PMCID: PMC1063871 Development of the Fine Structure of the Myelin Sheath in Sciatic Nerves of Chick Embryos PMCID: PMC1063872 Acoustic Orientation in the Oil Bird, Steatornis PMCID: PMC1063873 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||