Now showing items 1-10 of 38
Vegetative Mutants and Clonal Senility in Tetrahymena *
(Blackwell Publishing Ltd, 1959-05)
Eight strains of Tetrahymena pyriformis were examined in multiple daily isolation series over ∼ 800 generations. Dead and defective lineages appeared in all clones. In 7, the defective sub-lines appeared at a constant ...
Free and nonprotein amino acids of Tetrahymena pyriformis
(Elsevier, 1956-05)
Paper chromatography was used to determine 20 amino acids and related compounds present in both the free and the nonprotein forms in Tetrahymena pyriformis. The most abundant free amino acids in the cells were found to be ...
Effect of dinitrophenol on the interaction between myosin and nucleotides
(Elsevier, 1959-04)
1. 1. The effects of 2,4-dinitrophenol (DNP) on the interaction of several nucleoside triphosphates with myosin B and glycerol-treated psoas fibers have been studied at 0.3 M KCl, 10-3 M Ca++, pH 7.0, 25.5 [deg]C.2. 2. The ...
Glycolytic activity in extracts of young rat skin
(Elsevier, 1959-01)
1. 1. Data have been presented which indicate the presence of most of the glycolytic enzymes in the skin of the young rat.2. 2. A cell-free extract of this tissue will stoichiometrically convert fructose diphosphate to ...
Transduction and segregation in Escherichia coli K12
(Elsevier, 1957-10)
The transduction of the gal+ character into gal- mutants of Escherichia coli K12 with high frequency transducing (HFT) lysates of phage [lambda] has been studied. Sensitive recipients infected at low multiplicity give rise ...
A Quarter Century Exploring Tetrahymena *
(Blackwell Publishing Ltd, 1959-02)
In reviewing 25 years of work on Tetrahymena , the author describes early difficulties experienced by himself and others in developing a chemically-defined medium and in defining the taxonomy of T. pyriformis. With ...
Physiology of the cell surface of Neurospora ascospores. II. Interference with dye adsorption by polymyxin
(Elsevier, 1956-05)
Polymyxin B prevents the germination of ascospores of Neurospora tetrasperma with an LD50 of 3-4 p.p.m. The toxic effect of polymyxin is partially reversed by calcium and magnesium ions. The effect of polymyxin on the ...
The metabolism of Brucellae: The oxidation of succinate as a function of pH and concentration
(Elsevier, 1956-10)
The marked difference between the rates of succinate uptake and oxidation by Brucella abortus that occurs when the concentration of hydrogen ions or the substrate is grossly increased was accounted for predominantly in ...