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 59(4);  April 1968
The cover of the journal
INTRAMOLECULAR HYDROGEN BONDING OF AZO DYES IN AQUEOUS SOLUTION
Warren H. Inskeep, Dane L. Jones, William T. Silfvast, and Edward M. Eyring
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1027–1029.
PMCID: PMC224825
Molecular theory of the helix-coil transition in polyamino acids, I. Formulation.
N Go, M Go, and H A Scheraga
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1030–1037.
PMCID: PMC224826
Electron spin resonance of a gamma-irradiated single crystal of 3'-cytidylic acid.
W Bernhard and W Snipes
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1038–1044.
PMCID: PMC224827
Mössbauer studies on putidaredoxin.
R Cooke, J C Tsibris, P G Debrunner, R Tsai, I C Gunsalus, and H Frauenfelder
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1045–1052.
PMCID: PMC224828
Reproductive structures and taxonomic affinities of some nannofossils from the gunflint iron formation.
G R Licari and P E Cloud, Jr
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1053–1060.
PMCID: PMC224829
PREFERRED ORIENTATION OF QUARTZ IN A CHERT BRECCIA
Hans-Rudolf Wenk and Yehoshua Kolodny
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1061–1066.
PMCID: PMC224830
ELLIPTIC OPERATORS OF HIGHER ORDER IN DIVERGENCE FORM
Umberto Neri
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1067.
PMCID: PMC224831
ON THE LAW OF THE ITERATED LOGARITHM WITHOUT ASSUMPTIONS ABOUT THE EXISTENCE OF MOMENTS
Valentin V. Petrov
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1068–1072.
PMCID: PMC224832
DECOMPOSITIONS OF TRIPLY CONNECTED DOMAINS
Friedrich Huckemann
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1073–1077.
PMCID: PMC224833
AN ANALYSIS OF SCIENTIFIC PRODUCTIVITY
Clarence Zener
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1078–1081.
PMCID: PMC224834
Cellular differentiation in Volvox.
R C Starr
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1082–1088.
PMCID: PMC224835
CELL DIVISION AND THE DIFFERENTIATION OF WOUND-VESSEL MEMBERS IN CULTURED STEM SEGMENTS OF Coleus
D. E. Fosket
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1089–1096.
PMCID: PMC224836
Lipid abnormalities in a variant of the Hurler syndrome.
R Matalon, J A Cifonelli, H Zellweger, and A Dormanfman
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1097–1102.
PMCID: PMC224837
Further characterization of L-cell virions.
D A Kindig, R Karp, and W H Kirsten
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1103–1109.
PMCID: PMC224838
The synthesis of collagen and protocollagen hydroxylase by fibroblastic and nonfibroblastic cell lines.
B Goldberg and H Green
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1110–1115.
PMCID: PMC224839
Effects of DNA repair in transformation-heterozygotes of pneumococcus.
F Guerrini and M S Fox
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1116–1123.
PMCID: PMC224840
Nonoperative DNA complementary to ribosomal RNA.
F M Ritossa
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1124–1131.
PMCID: PMC224841
Loss of T-antigen from somatic hybrids between mouse cells and SV40-transformed human cells.
M C Weiss, B Ephrussi, and L J Scaletta
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1132–1135.
PMCID: PMC224842
A membranelike fraction from Neurospora crassa, I. Structure of "membranes" and release of free amino acids.
A Bergquist, E A Eakin, B V Winkel, and R P Wagner
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1136–1143.
PMCID: PMC224843
The loss of phenotypic traits by differentiated cells, V. The effect of 5-bromodeoxyuridine on cloned chondrocytes.
J Abbott and H Holtzer
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1144–1151.
PMCID: PMC224844
Bacterial conjugation: electron microscope observations on thin sections.
W H Schreil and R J Christensen
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1152–1157.
PMCID: PMC224845
Viral DNA in polyoma- and SV40-transformed cell lines.
H Westphal and R Dulbecco
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1158–1165.
PMCID: PMC224846
Interspecific transplantation as a tool for indicating phylogenetic relationships.
M P Kambysellis
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1166–1172.
PMCID: PMC224847
Effect of bretylium and guanethidine on transmission to sweat glands in the cat.
D P Lloyd
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1173–1178.
PMCID: PMC224848
MECHANISM OF MOVEMENTS OF GRANULES IN MELANOCYTES OF Fundulus heteroclitus
Lorna Green
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1179–1186.
PMCID: PMC224849
Stimulation of the carotid chemoreceptors of the dog by dopamine.
L Jacobs and J H Comroe, Jr
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1187–1193.
PMCID: PMC224850
PHASE TRANSITION IN THE SLIDING-FILAMENT MODEL OF MUSCULAR CONTRACTION
Terrell L. Hill
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1194–1200.
PMCID: PMC224851
Concerning negative conductance in the squid axon.
D Agin and C Schauf
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1201–1208.
PMCID: PMC224852
Evidence for a relationship between mouse hemopoietic stem cells and cells forming colonies in culture.
A M Wu, L Siminovitch, J E Till, and E A McCulloch
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1209–1215.
PMCID: PMC224853
The syndrome of excessive thyrocalcitonin produced by medullary carcinoma of the thyroid.
K E Melvin and A H Tashjian, Jr
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1216–1222.
PMCID: PMC224854
THE FUNCTION OF THE ACCESSORY SEX GLANDS IN Periplaneta americana (L.), I. A QUANTITATIVE BIOASSAY FOR THE JUVENILE HORMONE
Dietrich Bodenstein and Eli Shaaya
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1223–1230.
PMCID: PMC224855
Elevation and depression of hepatic tyrosine transaminase activity by depletion and repletion of norepinephrine.
I B Black and J Axelrod
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1231–1234.
PMCID: PMC224856
Periods of genetic transcription required for the synthesis of three enzymes during cellular slime mold development.
R Roth, J M Ashworth, and M Sussman
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1235–1242.
PMCID: PMC224857
Polysome formation with tobacco mosaic virus RNA.
A Marcus, B Luginbill, and J Feeley
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1243–1250.
PMCID: PMC224858
CYTOPLASMIC PARTICLES CARRYING RAPIDLY LABELED RNA IN DEVELOPING INSECT EPIDERMIS
Fotis C. Kafatos
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1251–1258.
PMCID: PMC224859
Mutants that make more lac repressor.
B Müller-Hill, L Crapo, and W Gilbert
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1259–1264.
PMCID: PMC224860
Early estrogen action: nuclear synthesis and accumulation of protein correlated with enhancement of two DNA-dependent RNA polymerase activities.
T H Hamilton, C S Teng, and A R Means
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1265–1272.
PMCID: PMC224861
The chelate structure of Micrococcus aerogenes rubredoxin.
H Bachmayer, K T Yasunobu, and H R Whiteley
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1273–1277.
PMCID: PMC224862
The formation of 5S ribosomal ribonucleic acid in Bacillus subtilis by posttranscriptional modification.
N B Hecht, M Bleyman, and C R Woese
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1278–1283.
PMCID: PMC224863
Protein synthesis in the isolated giant axon of the squid.
A Giuditta, W D Dettbarn, and M Brzin
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1284–1287.
PMCID: PMC224864
The biogenesis of mitochondria, VI. Biochemical basis of the resistance of Saccharomyces cerevisiae toward antibiotics which specifically inhibit mitochondrial protein synthesis.
A W Linnane, A J Lamb, C Christodoulou, and H B Lukins
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1288–1293.
PMCID: PMC224865
Restriction of infectious bacteriophage fd DNA's and an assay for in vitro host-controlled restriction and modification.
R Benzinger
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1294–1299.
PMCID: PMC224866
Host specificity of DNA produced by Escherichia coli, X. In vitro restriction of phage fd replicative form.
S Linn and W Arber
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1300–1306.
PMCID: PMC224867
N-terminal amino acid sequences of immunoglobulin chains in Polyodon spathula.
B Pollara, A Suran, J Finstad, and R A Good
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1307–1312.
PMCID: PMC224868
The biosynthesis of mannosyl-1-phosphoryl-polyisoprenol in Micrococcus lysodeikticus and its role in mannan synthesis.
M Scher, W J Lennarz, and C C Sweeley
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1313–1320.
PMCID: PMC224869
The amino acid sequence of porcine thyrocalcitonin.
J T Potts, Jr, H D Niall, H T Keutmann, H B Brewer, Jr, and L J Deftos
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1321–1328.
PMCID: PMC224870
Chemical basis for heterogeneity of ribosomal proteins.
S Fogel and P S Sypherd
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1329–1336.
PMCID: PMC224871
Changing patterns of histone acetylation and RNA synthesis in regeneration of the liver.
B G Pogo, A O Pogo, V G Allfrey, and A E Mirsky
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1337–1344.
PMCID: PMC224872
A preferred origin for the replication of lambda DNA.
S Makover
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1345–1348.
PMCID: PMC224873
Polyribosomal changes during inhibition of rabbit hemoglobin synthesis by an isoleucine antagonist.
M Hori and M Rabinovitz
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1349–1355.
PMCID: PMC224874
Conformation dependence of intramolecular energy transfer in phycoerythrin.
F D Macdowall, T Bednar, and A Rosenberg
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1356–1363.
PMCID: PMC224875
Cyclic adenosine monophosphate, CA++, and membranes.
H Rasmussen and A Tenenhouse
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1364–1370.
PMCID: PMC224876
Specific inhibition of virus growth in cells treated with phospholipase C.
R M Friedman and I Pastan
Proc Natl Acad Sci U S A. 1968 April; 59(4): 1371–1378.
PMCID: PMC224877
Journal Matter
Original table of contents page
Administrative content — journal masthead, notices, indexes, etc.
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