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Volume 60(1);  May 1968
The cover of the journal
Introduction to the symposium on the international biological program.
R Revelle
Proc Natl Acad Sci U S A. 1968 May; 60(1): 1–4.
PMCID: PMC539085
The international biological program and the science of ecology.
F E Smith
Proc Natl Acad Sci U S A. 1968 May; 60(1): 5–11.
PMCID: PMC539127
Adaptability and human genetics.
W S Laughlin
Proc Natl Acad Sci U S A. 1968 May; 60(1): 12–21.
PMCID: PMC539090
The biology of islands.
T H Hubbell
Proc Natl Acad Sci U S A. 1968 May; 60(1): 22–32.
PMCID: PMC539105
Human welfare and international cooperation.
O H Frankel
Proc Natl Acad Sci U S A. 1968 May; 60(1): 33–41.
PMCID: PMC539122
Conservation, the federal government, and the international biological program.
S A Cain
Proc Natl Acad Sci U S A. 1968 May; 60(1): 42–50.
PMCID: PMC539126
ON STELLAR ROTATION
Harland W. Epps
Proc Natl Acad Sci U S A. 1968 May; 60(1): 51–58.
PMCID: PMC539128
THE RESONATING-VALENCE-BOND THEORY OF SUPERCONDUCTIVITY: CREST SUPERCONDUCTORS AND THROUGH SUPERCONDUCTORS
Linus Pauling
Proc Natl Acad Sci U S A. 1968 May; 60(1): 59–65.
PMCID: PMC539129
ON THE CONVERGENCE OF APPROXIMANTS TO A MARKOV CHAIN, I
David A. Freedman
Proc Natl Acad Sci U S A. 1968 May; 60(1): 66–72.
PMCID: PMC539130
ON GENERALIZED STANDARD ALGEBRAS
R. D. Schafer
Proc Natl Acad Sci U S A. 1968 May; 60(1): 73–74.
PMCID: PMC539131
SECTIONAL CURVATURES OF GRASSMANN MANIFOLDS
Yung-Chow Wong
Proc Natl Acad Sci U S A. 1968 May; 60(1): 75–79.
PMCID: PMC539132
THEORETICAL DISTRIBUTION OF TWO-DIMENSIONAL PROJECTIONS IN ELECTRON-MICROSCOPIC SECTIONS
N. B. Grover and George H. Weiss
Proc Natl Acad Sci U S A. 1968 May; 60(1): 80–85.
PMCID: PMC539133
Nuclear magnetic resonance studies of the active site of carboxypeptidase A.
G Navon, R G Shulman, B J Wyluda, and T Yamane
Proc Natl Acad Sci U S A. 1968 May; 60(1): 86–91.
PMCID: PMC539134
Nuclear magnetic resonance studies of the structure and binding sites of enzymes. II. Spectral assignments and inhibitor binding in hen egg-white lysozyme.
J S Cohen and O Jardetzky
Proc Natl Acad Sci U S A. 1968 May; 60(1): 92–99.
PMCID: PMC539135
Electron paramagnetic resonance of chlorophyll-water aggregates.
J J Katz, K Ballschmiter, M Garcia-Morin, H H Strain, and R A Uphaus
Proc Natl Acad Sci U S A. 1968 May; 60(1): 100–107.
PMCID: PMC539086
Triplet-triplet energy transfer in proteins as a criterion of proximity.
W C Galley and L Stryer
Proc Natl Acad Sci U S A. 1968 May; 60(1): 108–114.
PMCID: PMC539087
Action of hydrogenated ergot alkaloids upon transmission to sweat glands in the cat.
D P Lloyd
Proc Natl Acad Sci U S A. 1968 May; 60(1): 115–117.
PMCID: PMC539088
The dependence of nerve membrane potentials upon extracellular ionic strength.
C S Spyropoulos and T Teorell
Proc Natl Acad Sci U S A. 1968 May; 60(1): 118–125.
PMCID: PMC539089
Growth control in cultured cells: selection of sublines with increased sensitivity to contact inhibition and decreased tumor-producing ability.
R E Pollack, H Green, and G J Todaro
Proc Natl Acad Sci U S A. 1968 May; 60(1): 126–133.
PMCID: PMC539091
Streptococcal group-specific antibodies: occurrence of a restricted population following secondary immunization.
J B Fleischman, D G Braun, and R M Krause
Proc Natl Acad Sci U S A. 1968 May; 60(1): 134–139.
PMCID: PMC539092
Localization of vitamin A in the eye of a pulmonate snail.
R M Eakin and J L Brandenburger
Proc Natl Acad Sci U S A. 1968 May; 60(1): 140–145.
PMCID: PMC539093
Extraretinal light perception in the sparrow. II. Photoperiodic stimulation of testis growth.
M Menaker and H Keatts
Proc Natl Acad Sci U S A. 1968 May; 60(1): 146–151.
PMCID: PMC539094
Evidence for the appearance of novel gene products during amphibian blastulation.
E H Davidson, M Crippa, and A E Mirsky
Proc Natl Acad Sci U S A. 1968 May; 60(1): 152–159.
PMCID: PMC539095
Formation of merodiploids in matings with a class of Rec- recipient strains of Escherichia coli K12.
B Low
Proc Natl Acad Sci U S A. 1968 May; 60(1): 160–167.
PMCID: PMC539096
Transduction and the clustering of genes in fluorescent Pseudomonads.
A M Chakrabarty, C F Gunsalus, and I C Gunsalus
Proc Natl Acad Sci U S A. 1968 May; 60(1): 168–175.
PMCID: PMC539097
Proteins in dinosaur bones.
M F Miller, 2nd and R W Wyckoff
Proc Natl Acad Sci U S A. 1968 May; 60(1): 176–178.
PMCID: PMC539098
The structure of acid mucopolysaccharides produced by Hurler fibroblasts in tissue culture.
R Matalon and A Dorfman
Proc Natl Acad Sci U S A. 1968 May; 60(1): 179–185.
PMCID: PMC539099
Genetic modification of energy-conserving systems in yeast mitochondria.
J C Beck, J R Mattoon, D C Hawthorne, and F Sherman
Proc Natl Acad Sci U S A. 1968 May; 60(1): 186–193.
PMCID: PMC539100
Physical conservation of parental cytoplasmic DNA through meiosis in Chlamydomonas reinhardi.
K S Chiang
Proc Natl Acad Sci U S A. 1968 May; 60(1): 194–200.
PMCID: PMC539101
Structure-function relationships of protein polysaccharide complexes: specific ion-binding properties.
C Woodward and E A Davidson
Proc Natl Acad Sci U S A. 1968 May; 60(1): 201–205.
PMCID: PMC539102
Psychedelic drugs: steric factors that predict psychotropic activity.
S H Snyder and E Richelson
Proc Natl Acad Sci U S A. 1968 May; 60(1): 206–213.
PMCID: PMC539103
Sequential cleavage of dinucleotides from DNA by phage Sp3 DNAse.
D M Trilling and H V Aposhian
Proc Natl Acad Sci U S A. 1968 May; 60(1): 214–221.
PMCID: PMC539104
Evidence for the steroid-induced accumulation of tyrosine-aminotransferase messenger RNA in the absence of protein synthesis.
B Peterkofsky and G M Tomkins
Proc Natl Acad Sci U S A. 1968 May; 60(1): 222–228.
PMCID: PMC539106
De novo synthesis of myosin in a cell-free system.
S M Heywood and M Nwagwu
Proc Natl Acad Sci U S A. 1968 May; 60(1): 229–234.
PMCID: PMC539107
SIZE AND STRUCTURAL VARIATIONS OF MITOCHONDRIAL DNA
Y. Suyama and Karen Miura
Proc Natl Acad Sci U S A. 1968 May; 60(1): 235–242.
PMCID: PMC539108
Electron-microscopic visualization of deletion mutations.
R W Davis and N Davidson
Proc Natl Acad Sci U S A. 1968 May; 60(1): 243–250.
PMCID: PMC539109
The action of heat and ionizing radiation on the infectivity of isolated phi-X-174 DNA.
G Hotz and A Müller
Proc Natl Acad Sci U S A. 1968 May; 60(1): 251–257.
PMCID: PMC539110
The generation of antihapten antibodies with electrophoretically homogeneous L chains.
L Brenneman and S J Singer
Proc Natl Acad Sci U S A. 1968 May; 60(1): 258–264.
PMCID: PMC539111
Cohesive sites and helper phage function of P2, lambda, and 186 DNA's.
M Mandel and A Berg
Proc Natl Acad Sci U S A. 1968 May; 60(1): 265–268.
PMCID: PMC539112
The activation of amino acids for biosynthesis of gramicidin S.
W Gevers, H Kleinkauf, and F Lipmann
Proc Natl Acad Sci U S A. 1968 May; 60(1): 269–276.
PMCID: PMC539113
On the noncatalytic proteins of membrane systems.
D E Green, N F Haard, G Lenaz, and H I Silman
Proc Natl Acad Sci U S A. 1968 May; 60(1): 277–284.
PMCID: PMC539114
Studies on polynucleotides. LXXXVII. The joining of short deoxyribopolynucleotides by DNA-joining enzymes.
N K Gupta, E Ohtsuka, H Weber, S H Chang, and H G Khorana
Proc Natl Acad Sci U S A. 1968 May; 60(1): 285–292.
PMCID: PMC539115
A radioimmunoassay for thyrocalcitonin.
L J Deftos, M R Lee, and J T Potts, Jr
Proc Natl Acad Sci U S A. 1968 May; 60(1): 293–299.
PMCID: PMC539116
"Contact inhibition" of cell division in 3T3 cells.
R W Holley and J A Kiernan
Proc Natl Acad Sci U S A. 1968 May; 60(1): 300–304.
PMCID: PMC539117
On the initiation of transcription of the tryptophan operon in Escherichia coli.
F Imamoto
Proc Natl Acad Sci U S A. 1968 May; 60(1): 305–312.
PMCID: PMC539118
The periodicity of RNA polymerase initiations: a new regulatory feature of transcription.
R F Baker and C Yanofsky
Proc Natl Acad Sci U S A. 1968 May; 60(1): 313–320.
PMCID: PMC539119
Cell-free protein synthesis directed by Q beta-RNA and by two specific fragments.
B A Bassel, Jr
Proc Natl Acad Sci U S A. 1968 May; 60(1): 321–328.
PMCID: PMC539120
Studies of DNA replication in vivo. I. Isolation of the first intermediate of DNA replication in bacteria as single-stranded DNA.
M Oishi
Proc Natl Acad Sci U S A. 1968 May; 60(1): 329–336.
PMCID: PMC539121
The continued presence of quantasomes in ethylenediaminetetraacetate-washed chloroplast lamellae.
R B Park and A O Pheifhofer
Proc Natl Acad Sci U S A. 1968 May; 60(1): 337–343.
PMCID: PMC539123
STUDIES ON POLYNUCLEOTIDES, LXXXIV. ON THE ROLE OF RIBOSOMAL SUBUNITS IN PROTEIN SYNTHESIS
Proc Natl Acad Sci U S A. 1968 May; 60(1): 344.
PMCID: PMC539124
Correction
THE in vitro INDUCTION OF AN INCREASE IN CELL MULTIPLICATION AND CELLULAR LIFE SPAN BY THE WATER-SOLUBLE CARCINOGEN DIMETHYLNITROSAMINE
Proc Natl Acad Sci U S A. 1968 May; 60(1): 344.
PMCID: PMC539125
Corrects: E Huberman, et al. The in vitro induction of an increase in cell multiplication and cellular life span by the water-soluble carcinogen dimethylnitrosamine. Proc Natl Acad Sci U S A. 1968 January; 59(1): 77–82.
Journal Matter
Original table of contents page
Administrative content — journal masthead, notices, indexes, etc.
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