Now showing items 11-18 of 18
Synthesis of B vitamins by excised parts of White lupine seedlings grown in sterile culture
(Elsevier, 1954-09)
In this investigation it has been found that excised roots, hypocotyls, and epicotyls of White lupine seedlings synthesize thiamine, riboflavin, and niacin when grown in sterile cultures. Oxygen is necessary for this synthesis.
The development of tyrosinase and cytochrome oxidase activity in mutants of Glomerella cingulata
(Elsevier, 1953-07)
Cytochrome oxidase activity in the standard type and in four mutants of Glomerella cingulata has been shown to be constant throughout the mycelial development. This enzyme is concentrated on mitochondria-like particles ...
The effect of polymyxin on plant roots
(Elsevier, 1955-10)
Root growth of young seedlings of barley and other species was substantially inhibited when placed in 5-10 p.p.m. solutions of the antibiotic, polymyxin B. The inhibiting effect was suppressed by simultaneous presentation ...
The Raman spectra of four isotopic varieties of diborane in the gas phase
(Elsevier, 1958-02)
Raman spectra of the four isotopic species, 11B2H6, 11B2D6, 10B2H6, 10B2D6, in the gas phase have been obtained and interpreted in terms of the D2h bridge model. The results are in agreement with previous interpretations ...
Mammalian tyrosinase: Effect of ions on enzyme action
(Elsevier, 1952-04)
1. 1. The univalent cations Li+, Na+, K+, and NH4+ have no effect on tyrosinase action.2. 2. The anions, fluoride, chloride, acetate, and oxalate, consistently inhibit the tyrosine-tyrosinase and dopa-tyrosinase reactions. ...
Sarcosine oxidase activity of rat liver tissue: Effect of folic acid deficiency and induced hyperthyroidism
(Elsevier, 1952-11)
The sarcosine oxidase content of hepatic tissue from rats made deficient in folic acid was similar to that of normal rats. This is taken as evidence that sarcosine oxidase activity is not dependent upon the presence of ...
A method for the determination of the electrophoretic patterns of hemolyzed mouse sera
(Elsevier, 1951-05)
A method is presented that will give comparable results for the evaluation of electrophoretic data on hemolyzed mouse serum patterns. Not only may hemoglobin be determined in the serum, but its contribution to the total ...
Factors influencing xanthine oxidase activity in rat skin
(Elsevier, 1955-05)
1. 1. A method is described for preparing skin extracts which show reasonably consistent xanthine oxidase activities.2. 2. Levels of xanthine oxidase in skin do not change significantly during the first 21 days after birth. ...