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Volume 47(1);  January 1961
The cover of the journal
Biochemistry
ACCELERATED DNA SYNTHESIS IN ONION ROOT MERISTEM DURING X-IRRADIATION
Nirmal K. Das and Max Alfert
Proc Natl Acad Sci U S A. 1961 January; 47(1): 1–6.
PMCID: PMC285220
THE CIS-TRANS ISOMERIZATION OF CONJUGATED POLYENES AND THE OCCURRENCE OF A HINDERED CIS-ISOMER OF RETINENE IN THE RHODOPSIN SYSTEM
Alberte Pullman and Bernard Pullman
Proc Natl Acad Sci U S A. 1961 January; 47(1): 7–14.
PMCID: PMC285222
ON THE PRESERVATION OF ANTIGENIC DETERMINANTS DURING FIXATION AND EMBEDDING FOR ELECTRON MICROSCOPY
Rex S. Spendlove and S. J. Singer
Proc Natl Acad Sci U S A. 1961 January; 47(1): 14–18.
PMCID: PMC285223
STUDIES ON THE COMPOSITION OF THE PROTEIN FROM ESCHERICHIA COLI RIBOSOMES
J.-P. Waller and J. Ieuan Harris
Proc Natl Acad Sci U S A. 1961 January; 47(1): 18–23.
PMCID: PMC285224
THE ESSENTIALITY OF COBALT FOR SOYBEAN PLANTS GROWN UNDER SYMBIOTIC CONDITIONS
Shaukat-Ahmed and Harold J. Evans
Proc Natl Acad Sci U S A. 1961 January; 47(1): 24–36.
PMCID: PMC285226
Botany
AUXIN-KINETIN INTERACTION REGULATING THE SCOPOLETIN AND SCOPOLIN LEVELS IN TOBACCO TISSUE CULTURES
Folke Skoog and Edgardo Montaldi
Proc Natl Acad Sci U S A. 1961 January; 47(1): 36–49.
PMCID: PMC285229
Chemistry
NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY: ABNORMAL SPLITTING OF ETHYL GROUPS DUE TO MOLECULAR ASSYMETRY
Paul R. Shafer, Donald R. Davis, Martin Vogel, K. Nagarajan, and John D. Roberts
Proc Natl Acad Sci U S A. 1961 January; 47(1): 49–51.
PMCID: PMC285231
Genetics
LINKAGE OF GENETIC UNITS OF BACILLUS SUBTILIS IN DNA TRANSFORMATION
Eugene W. Nester and Joshua Lederberg
Proc Natl Acad Sci U S A. 1961 January; 47(1): 52–55.
PMCID: PMC285232
GENETIC ANALYSIS, BY MEANS OF TRANSFORMATION, OF HISTIDINE LINKAGE GROUPS IN BACILLUS SUBTILIS
Erela Ephrati-Elizur, P. R. Srinivasan, and Stephen Zamenhof
Proc Natl Acad Sci U S A. 1961 January; 47(1): 56–63.
PMCID: PMC285234
THE DELAYED ORIGIN OF MUTANTS INDUCED BY EXPOSURE OF EXTRACELLULAR PHAGE T4 TO ETHYL METHANE SULFONATE
D. MacDonald Green and David R. Krieg
Proc Natl Acad Sci U S A. 1961 January; 47(1): 64–72.
PMCID: PMC285235
COMPLEMENTATION BETWEEN ALLELES OF THE Td LOCUS IN NEUROSPORA CRASSA
Ann M. Lacy and David M. Bonner
Proc Natl Acad Sci U S A. 1961 January; 47(1): 72–77.
PMCID: PMC285237
GENETIC CONTROL OF DOPA OXIDASE ACTIVITY IN DROSOPHILA MELANOGASTER, II. REGULATING MECHANISMS AND INTER-AND INTRA-STRAIN HETEROGENEITY
Herman W. Lewis and Helen S. Lewis
Proc Natl Acad Sci U S A. 1961 January; 47(1): 78–86.
PMCID: PMC285239
INHIBITION BY PERIODATE OF MATING IN ESCHERICHIA COLI K-12
Peter H. A. Sneath and Joshua Lederberg
Proc Natl Acad Sci U S A. 1961 January; 47(1): 86–90.
PMCID: PMC285242
Geophysics
COMPARISON OF THEORETICAL WITH OBSERVED VALUES OF THE PERIODS OF FREE OSCILLATION OF THE EARTH
C. L. Pekeris, Z. Alterman, and H. Jarosch
Proc Natl Acad Sci U S A. 1961 January; 47(1): 91–98.
PMCID: PMC285244
Mathematics
RINGS AND QUASICONFORMAL MAPPINGS IN SPACE
F. W. Gehring
Proc Natl Acad Sci U S A. 1961 January; 47(1): 98–105.
PMCID: PMC285246
LOCALLY UNKNOTTED COMBINATORIAL n—1 MANIFOLDS IN En HAVE SHELL NEIGHBORHOODS
O. G. Harrold, Jr.
Proc Natl Acad Sci U S A. 1961 January; 47(1): 105–107.
PMCID: PMC285248
EXEMPLES DE VARIÉTÉS PROJECTIVES EN CARACTÉRISTIQUE p NON RELEVABLES EN CARACTÉRISTIQUE ZÉRO
Jean-Pierre Serre
Proc Natl Acad Sci U S A. 1961 January; 47(1): 108–109.
PMCID: PMC285250
A FAVORABLE STRATEGY FOR TWENTY-ONE
Edward Thorp
Proc Natl Acad Sci U S A. 1961 January; 47(1): 110–112.
PMCID: PMC285252
STRENGTHENING OF SPERNER'S LEMMA APPLIED TO HOMOLOGY THEORY
A. B. Brown and S. S. Cairns
Proc Natl Acad Sci U S A. 1961 January; 47(1): 113–114.
PMCID: PMC285253
Microbiology
RIBOSOME-BOUND β-GALACTOSIDASE
D. B. Cowie, S. Spiegelman, R. B. Roberts, and J. D. Duerksen
Proc Natl Acad Sci U S A. 1961 January; 47(1): 114–122.
PMCID: PMC285254
Physics
ON THE BOUND STATES OF A GIVEN POTENTIAL
Julian Schwinger
Proc Natl Acad Sci U S A. 1961 January; 47(1): 122–129.
PMCID: PMC285255
Physiology
A GLIA-NEURAL THEORY OF BRAIN FUNCTION
Robert Galambos
Proc Natl Acad Sci U S A. 1961 January; 47(1): 129–136.
PMCID: PMC285256
Journal Matter
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