pmc logo imageJournal ListSearchpmc logo image
Logo of pnasPNAS Home page.PNAS Editorial BoardPNAS AboutPNAS SubscriptionsPNAS Info for Authors
This journal provides immediate access to some articles.
Other Issues:  previous | next | latest | archive
Volume 43(4);  April 15, 1957
The cover of the journal
Genetics
THE GENETIC CONTROL OF ADENYLOSUCCINASE IN Neurospora Crassa
Norman H. Giles, C. W. H. Partridge, and Norma J. Nelson
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 305–317.
PMCID: PMC528441
ARE ALL PRODUCTS OF SPERMATOGENESIS REGULARLY FUNCTIONAL?
E. Novitski and Iris Sandler
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 318–324.
PMCID: PMC528442
SHORTENING OF LIFE IN THE OFFSPRING OF MALE MICE EXPOSED TO NEUTRON RADIATION FROM AN ATOMIC BOMB
W. L. Russell
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 324–329.
PMCID: PMC528443
CORRELATED SELECTION FOR MOTILITY AND SEX-INCOMPATIBILITY IN Escherichia Coli K12
P. D. Skaar, Alan Richter, and Joshua Lederberg
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 329–333.
PMCID: PMC528444
Mathematics
A UNIFIED THEORY OF GENERAL RELATIVITY OF GRAVITATION AND ELECTROMAGNETISM. IV
Luther P. Eisenhart
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 333–336.
PMCID: PMC528445
INTEGRATION OVER HILBERT SPACE AND OUTER EXTENSIONS
K. O. Friedrichs and H. N. Shapiro
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 336–338.
PMCID: PMC528446
FACTORIZATION IN THE GROUP ALGEBRA OF THE REAL LINE
Walter Rudin
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 339–340.
PMCID: PMC528447
Pathology and Bacteriology
SPECTROPHOTOMETRIC EXAMINATION OF HYDROGENASE AND NITROGENASE IN SOYBEAN NODULES AND Azotobacter
P. B. Hamilton, A. L. Shug, and P. W. Wilson
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 297–304.
PMCID: PMC528439
OPTICALLY ACTIVE COMPOUNDS FROM RACEMIC MIXTURES BY MEANS OF RANDOM DISTRIBUTION
John H. Northrop
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 304–305.
PMCID: PMC528440
Physics
SPECIFICITY OF THE LONDON-EISENSCHITZ WANG FORCE
Jerrold M. Yos, William L. Bade, and Herbert Jehle
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 341–346.
PMCID: PMC528448
Psychology
THE AUDITORY SENSITIVITY OF THE ATLANTIC GRASSHOPPER
Ernest Glen Wever and Jack A. Vernon
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 346–348.
PMCID: PMC528449
SOME EFFECTS OF ALTERNATION RATE IN A TIME-CORRELATED REINFORCEMENT CONTINGENCY
W. N. Schoenfeld and W. W. Cumming
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 349–354.
PMCID: PMC528450
Zoölogy and Anatomy
TRANSPLANTATIONS OF THE EMBRYONIC CHICK FOREBRAIN REGION BEFORE ESTABLISHMENT OF CIRCULATION
Petar N. Martinovitch
Proc Natl Acad Sci U S A. 1957 April 15; 43(4): 354–356.
PMCID: PMC528451
Journal Matter
Original table of contents page
| PDF–70K |
Administrative content — journal masthead, notices, indexes, etc.
| PDF–84K |
Other Issues:  previous | next | latest | archive
Articles from Proceedings of the National Academy of Sciences of the United States of America are provided here courtesy of
National Academy of Sciences