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Table of Contents

October 15, 1957; vol. 43 no. 10

Biochemistry

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    STUDIES ON RIBONUCLEIC ACID ISOLATED FROM EHRLICH ASCITES TUMOR CELLS
    R. A. Brown, M. C. Davies, J. S. Colter, J. B. Logan, and D. Kritchevsky
    PNAS October 15, 1957 43 (10) 857-860; https://doi.org/10.1073/pnas.43.10.857
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    MACROMOLECULAR AGGREGATION STATES IN RELATION TO MINERALIZATION: THE COLLAGEN-HYDROXYAPATITE SYSTEM AS STUDIED IN VITRO
    Melvin J. Glimcher, Alan J. Hodge, and Francis O. Schmitt
    PNAS October 15, 1957 43 (10) 860-867; https://doi.org/10.1073/pnas.43.10.860
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    SPERMINE AND RELATED POLYAMINES AS GROWTH STIMULANTS FOR Lactobacillus Casei
    Hayato Kihara and Esmond E. Snell
    PNAS October 15, 1957 43 (10) 867-871; https://doi.org/10.1073/pnas.43.10.867

Genetics

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    A RELATION OF NUCLEIC ACID SYNTHESIS TO RADIATION-INDUCED MUTATION FREQUENCY IN BACTERIA
    F. L. Haas and C. O. Doudney
    PNAS October 15, 1957 43 (10) 871-883; https://doi.org/10.1073/pnas.43.10.871
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    INHERITANCE IN Nicotiana Tabacum. XXVIII. THE CYTOGENETICS OF INTROGRESSION
    R. E. Clausen and D. R. Cameron
    PNAS October 15, 1957 43 (10) 908-913; https://doi.org/10.1073/pnas.43.10.908
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    CONTROL OF SEX RATIO IN RABBITS BY ELECTROPHORESIS OF SPERMATOZOA
    Manuel J. Gordon
    PNAS October 15, 1957 43 (10) 913-918; https://doi.org/10.1073/pnas.43.10.913
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    EXTRANUCLEAR TRANSMISSION IN YEAST HETEROKARYONS
    Robert E. Wright and Joshua Lederberg
    PNAS October 15, 1957 43 (10) 919-923; https://doi.org/10.1073/pnas.43.10.919

Physiology

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    THE FORMATION OF ANTIBODIES IN MAN AFTER INJECTION OF PNEUMOCOCCAL POLYSACCHARIDES
    Michael Heidelberger
    PNAS October 15, 1957 43 (10) 883-887; https://doi.org/10.1073/pnas.43.10.883

Botany

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    CELL DIVISION IN ISOLATED SINGLE PLANT CELLS IN VITRO
    John G. Torrey
    PNAS October 15, 1957 43 (10) 887-891; https://doi.org/10.1073/pnas.43.10.887

Chemistry

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    EVIDENCE FOR AN UNSTABLE CO2 FIXATION PRODUCT IN ALGAL CELLS
    Helmut Metzner, Helmut Simon, Barbara Metzner, and Melvin Calvin
    PNAS October 15, 1957 43 (10) 892-895; https://doi.org/10.1073/pnas.43.10.892
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    THE LUMINESCENCE OF CHLOROPHYLL-CONTAINING PLANT MATERIAL
    Gordon Tollin and Melvin Calvin
    PNAS October 15, 1957 43 (10) 895-908; https://doi.org/10.1073/pnas.43.10.895

Mathematics

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    A SEMIGRAPHICAL METHOD FOR THE ANALYSIS OF COMPLEX PROBLEMS
    Edgar Anderson
    PNAS October 15, 1957 43 (10) 923-927; https://doi.org/10.1073/pnas.43.10.923
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    TERMINAL CONTROL, TIME LAGS, AND DYNAMIC PROGRAMMING
    Richard Bellman
    PNAS October 15, 1957 43 (10) 927-930; https://doi.org/10.1073/pnas.43.10.927
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    RANDOM WALK, SCATTERING, AND INVARIANT IMBEDDING I. ONE-DIMENSIONAL DISCRETE CASE
    Richard Bellman and Robert Kalaba
    PNAS October 15, 1957 43 (10) 930-933; https://doi.org/10.1073/pnas.43.10.930
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    THE STABLE HOMOTOPY OF THE CLASSICAL GROUPS
    Raoul Bott
    PNAS October 15, 1957 43 (10) 933-935; https://doi.org/10.1073/pnas.43.10.933
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    A GENERALIZATION OF WHITNEY'S THEOREM ON IDEALS OF DIFFERENTIABLE FUNCTIONS
    Leopoldo Nachbin
    PNAS October 15, 1957 43 (10) 935-937; https://doi.org/10.1073/pnas.43.10.935
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