- Stanley Cohen and Rita Levi-Montalcini
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A Nerve Growth-Stimulating Factor Isolated from Snake Venom
PNAS 1956 42: 571-574.
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- Joshua Lederberg
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Bacterial Protoplasts Induced by Penicillin
PNAS 1956 42: 574-577.
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- William Oroshnik, Paul K. Brown, Ruth Hubbard, and George Wald
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Hindered Cis Isomers of Vitamin A and Retinene: The Structure of the Neo-b Isomer
PNAS 1956 42: 578-580.
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- Donald F. Steiner and H. S. Anker
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On the Synthesis of Antibody Protein in vitro
PNAS 1956 42: 580-586.
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- Norton D. Zinder and William F. Arndt
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Production of Protoplasts of Escherichia coli by Lysozyme Treatment
PNAS 1956 42: 586-590.
[PDF]
- Mario Azzarri and Charles A. Kraus
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Ion Association in Aqueous Solutions of 1-1 Electrolytes at 25 Degrees
PNAS 1956 42: 590-596.
[PDF]
- William Moffitt and Jen Tsi Yang
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The Optical Rotatory Dispersion of Simple Polypeptides. I
PNAS 1956 42: 596-603.
[PDF]
- T. Y. Thomas
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Isotropic Materials Whose Deformation and Distortion Energies are Expressible by Scalar Invariants
PNAS 1956 42: 603-608.
[PDF]
- William Hovanitz
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Cytological Demonstration of the Helical Structure of Giant Chromosomes
PNAS 1956 42: 609-613.
[PDF]
- Laura Garnjobst and James F. Wilson
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Heterocaryosis and Protoplasmic Incompatibility in Neurospora crassa
PNAS 1956 42: 613-618.
[PDF]
- P. D. Skaar and Alan Garen
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The Orientation and Extent of Gene Transfer in Escherichia coli
PNAS 1956 42: 619-624.
[PDF]
- A. A. Albert
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A Property of Special Jordan Algebras
PNAS 1956 42: 624-625.
[PDF]
- Richard Bellman
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On a Class of Functional Equations of Modular Type
PNAS 1956 42: 626-629.
[PDF]
- Richard Bellman and Robert Kalaba
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On the Principle of Invariant Imbedding and Propagation Through Inhomogeneous Media
PNAS 1956 42: 629-632.
[PDF]
- Samuel Bourne
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On Multiplicative Idempotents of a Potent Semiring
PNAS 1956 42: 632-638.
[PDF]
- Earl A. Coddington
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Generalized Resolutions of the Identity for Closed Symmetric Ordinary Differential Operators
PNAS 1956 42: 638-642.
[PDF]
- Leon Ehrenpreis
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Cauchy's Problem for Linear Differential Equations with Constant Coefficients
PNAS 1956 42: 642-646.
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- Luther P. Eisenhart
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A Unified Theory of General Relativity of Gravitation and Electromagnetism. II
PNAS 1956 42: 646-650.
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- J. J. Kohn
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Singular Integral Equations for Differential Forms on Riemannian Manifolds
PNAS 1956 42: 650-653.
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- John McCarthy
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Measures of the Value of Information
PNAS 1956 42: 654-655.
[PDF]
- H. S. Vandiver
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Diophantine Equations in Certain Rings
PNAS 1956 42: 656-665.
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- Kenneth S. Pitzer
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A Fundamental Theory of Superconductivity
PNAS 1956 42: 665-670.
[PDF]
- I. E. Segal
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Convergent Approach to the Theory of Elementary Particle Interactions
PNAS 1956 42: 670-676.
[PDF]
- Victor G. Bruce and Colin S. Pittendrigh
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Temperature Independence in a Unicellular "Clock"
PNAS 1956 42: 676-682.
[PDF]
- Henry C. Sherman, Constance S. Pearson, Mary E. R. Bal, Andrea McCarthy, and Caroline Sherman Lanford
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Influence of Protein and Calcium Additions to Already Adequate Diet
PNAS 1956 42: 682-687.
[PDF]
- C. A. Terzuolo and T. H. Bullock
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Measurement of Imposed Voltage Gradient Adequate to Modulate Neuronal Firing
PNAS 1956 42: 687-694.
[PDF]
- Rita Levi-Montalcini and Stanley Cohen
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In vitro and in vivo Effects of a Nerve Growth-Stimulating Agent Isolated from Snake Venom
PNAS 1956 42: 695-699.
[PDF]
- P. J. Wangersky and W. J. Cunningham
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On Time Lags in Equations of Growth
PNAS 1956 42: 699-702.
[PDF]
- Nathan Kaliss
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Erratum: Course of Production of an Isoantiserum Effecting Tumor Homograft Survival in Mice
PNAS 1956 42: 702.
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