This journal provides immediate access to some articles. Volume 47(1); January 1961 Biochemistry ACCELERATED DNA SYNTHESIS IN ONION ROOT MERISTEM DURING X-IRRADIATION PMCID: PMC285220 THE CIS-TRANS ISOMERIZATION OF CONJUGATED POLYENES AND THE OCCURRENCE OF A HINDERED CIS-ISOMER OF RETINENE IN THE RHODOPSIN SYSTEM PMCID: PMC285222 ON THE PRESERVATION OF ANTIGENIC DETERMINANTS DURING FIXATION AND EMBEDDING FOR ELECTRON MICROSCOPY PMCID: PMC285223 STUDIES ON THE COMPOSITION OF THE PROTEIN FROM ESCHERICHIA COLI RIBOSOMES PMCID: PMC285224 THE ESSENTIALITY OF COBALT FOR SOYBEAN PLANTS GROWN UNDER SYMBIOTIC CONDITIONS PMCID: PMC285226 Botany AUXIN-KINETIN INTERACTION REGULATING THE SCOPOLETIN AND SCOPOLIN LEVELS IN TOBACCO TISSUE CULTURES PMCID: PMC285229 Chemistry NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY: ABNORMAL SPLITTING OF ETHYL GROUPS DUE TO MOLECULAR ASSYMETRY PMCID: PMC285231 Genetics LINKAGE OF GENETIC UNITS OF BACILLUS SUBTILIS IN DNA TRANSFORMATION PMCID: PMC285232 GENETIC ANALYSIS, BY MEANS OF TRANSFORMATION, OF HISTIDINE LINKAGE GROUPS IN BACILLUS SUBTILIS PMCID: PMC285234 THE DELAYED ORIGIN OF MUTANTS INDUCED BY EXPOSURE OF EXTRACELLULAR PHAGE T4 TO ETHYL METHANE SULFONATE PMCID: PMC285235 COMPLEMENTATION BETWEEN ALLELES OF THE Td LOCUS IN NEUROSPORA CRASSA PMCID: PMC285237 GENETIC CONTROL OF DOPA OXIDASE ACTIVITY IN DROSOPHILA MELANOGASTER, II. REGULATING MECHANISMS AND INTER-AND INTRA-STRAIN HETEROGENEITY PMCID: PMC285239 INHIBITION BY PERIODATE OF MATING IN ESCHERICHIA COLI K-12 PMCID: PMC285242 Geophysics COMPARISON OF THEORETICAL WITH OBSERVED VALUES OF THE PERIODS OF FREE OSCILLATION OF THE EARTH PMCID: PMC285244 Mathematics RINGS AND QUASICONFORMAL MAPPINGS IN SPACE PMCID: PMC285246 LOCALLY UNKNOTTED COMBINATORIAL n—1 MANIFOLDS IN En HAVE SHELL NEIGHBORHOODS PMCID: PMC285248 EXEMPLES DE VARIÉTÉS PROJECTIVES EN CARACTÉRISTIQUE p NON RELEVABLES EN CARACTÉRISTIQUE ZÉRO PMCID: PMC285250 A FAVORABLE STRATEGY FOR TWENTY-ONE PMCID: PMC285252 STRENGTHENING OF SPERNER'S LEMMA APPLIED TO HOMOLOGY THEORY PMCID: PMC285253 Microbiology RIBOSOME-BOUND β-GALACTOSIDASE PMCID: PMC285254 Physics ON THE BOUND STATES OF A GIVEN POTENTIAL PMCID: PMC285255 Physiology A GLIA-NEURAL THEORY OF BRAIN FUNCTION PMCID: PMC285256 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||