Now showing items 31-40 of 264
The synthesis of phage and host dna in the establishment of lysogeny
(Elsevier, 1965-04)
A method of extraction is described which prevents excessive fragmentation of bacterial DNA. The larger bacterial DNA can then be separated from the phage DNA on sucrose gradients. The relative amounts of phage and host ...
Biochemical and Ultrastructural Changes in Tetrahymena pyriformis During Starvation *
(Blackwell Publishing Ltd, 1968-02)
Certain of the ultrastructural and biochemical changes occurring during the first 25 hr of starvation in Tetrahymena pyriformis were studied. Ultrastructurally, numerous profiles of degenerating mitochondria were seen in ...
The surface activity of phenothiazine derivatives at the air-solution interface
(Elsevier, 1966-05)
The surface activity of triflupromazine, chlorpromazine, promazine, promethazine, and chlorpromazine sulfoxide has been determined at the air-solution interface by the drop-volume method to measure surface tension. Differences ...
Effects of prolactin and growth hormone on growth and metamorphosis of tadpoles of the frog, Rana pipiens
(Elsevier, 1969-08)
Mammalian prolactin at doses of 1-50 [mu]g/day promoted growth (increased wet weight, dry weight and body length) in Rana pipiens tadpoles. Mammalian growth hormone (GH) promoted growth only at the higher doses (50 [mu]g/day ...
Characterization of a mutant human erythrocyte carbonic anhydrase: Carbonic anhydrase IcGuam: The amino acid substitution and carboxylesterase and hydratase activities
(Elsevier, 1966-11)
Evidence is presented which indicates that an arginine residue has substituted for a glycine residue in the abnormal human erythrocyte carbonic anhydrase, CA IcGuam. The ratio of the amount of mutant to normal enzyme ...
Physicochemical and immunochemical studies on the reaction of bovine serum albumin with p,p'-difluoro-m,m'-dinitrodiphenylsulfone
(Elsevier, 1963-02)
Bovine serum albumin (BSA) was reacted with the bifunctional reagent p,p'-difluoro-m,m'-dinitrodiphenylsulfone (FNPS) under varying conditions. While intramolecular cross linkages involving the lysine and tyrosine residues ...
Mixing device for generating simple chromatographic gradients
(Elsevier, 1965-10)
A linear gradient device consisting of two concentric reservoirs of equal cross-sectional area, in which the initial and limiting eluent solutions are maintained in hydrostatic equilibrium, may be constructed from several ...
Effects of chlorpromazine on spiral cord reflex mechanisms,
(Elsevier, 1966-01)
The effects of chlorpromazine (CPZ) on the patellar reflex and segmentally evoked spinal cord potentials were determined in the high spinal and hemisectioned spinal cat preparations. CPZ in doses of 1-32 mg/kg given ...
Effects of psychoactive agents on acquisition of conditioned pole jumping in rats
(Springer-Verlag, 1965-07)
Albino rats required progressively more trials to reach a 90 percent avoidance criterion and achieved less mean total percent avoidance learning than saline injected controls following administration of increasing doses ...