Now showing items 21-30 of 264
A phage P22 gene controlling integration of prophage
(Elsevier, 1967-02)
A mutually noncomplementing group of phage P22 mutants (L mutants) have been isolated which cannot accomplish a late step necessary for prophage integration. L mutants produce turbid plaques and lead to cell survival on ...
Protein-carbohydrate interaction : III. Agar gel-diffusion studies on the interaction of concanavalin A, a lectin isolated from jack bean, with polysaccharides
(Elsevier, 1965-08)
Concanavalin A, a protein isolated from the jack bean (Canavalia ensiformis), has previously been shown to form a precipitate with glycogen and yeast mannan, and more recently with dextrans and amylopectin. Double-diffusion ...
Infrared target and background radiometric measurements--concepts units and techniques
(Elsevier, 1963-09)
This report discusses concepts units and techniques for making and describing measurements of radiation from targets and backgrounds.
The production of inactive phage P22 particles following induction
(Elsevier, 1967-10)
Using an in vitro system for tail attachment, it is demonstrated that following ultraviolet (UV) induction of Salmonella typhimurium LT2 (P22) most of the particles formed lack a functional tail. This effect is found at ...
Effects of trifluoperazine on the central nervous system of the cat
(Elsevier, 1966-01)
The effects of accumulative doses of trifluoperazine (0[middle dot]125-8 mg/kg) on the patellar and linguomandibular reflexes and segmentally evoked monosynaptic and polysynaptic spinal cord potentials were determined in ...
Effects of physostigmine on rat brain acetylcholine, acetylcholinesterase and conditioned pole jumping,
(Elsevier, 1968-03)
The present study was designed to provide evidence that the behavioral effects of physostigmine are related to inhibition of brain acetylcholinesterase (AChE). Adult male Holtzman rats were trained to pole jump to a buzzer ...
Hydrogen ion buffers and enzymatic activity: Myosin B adenosinetriphosphatase
(Elsevier, 1968-10)
The production of hydrogen ions during the hydrolysis of ATP by myosin B and the consequent fall in pH can produce alterations in enzymatic activity directly, or by influencing Ca ion concentrations controlled by metal-chelate ...
Thyroid hormone regulation of cardiac glycogen metabolism
(Elsevier, 1965-06)
The administration of thyroxin to rats (500 [mu]g daily for 2-3 weeks, 500 [mu]g daily for 1 week, or 50 [mu]g daily for 2 weeks) or triiodothyronine (100 [mu]g daily for 3-5 days) increased cardiac phosphorylase a levels. ...