Now showing items 2871-2880 of 2904
Isotopic tracer studies on the biosynthesis of deoxyribose in the rat
(Elsevier, 1963)
The biosynthesis of deoxyribose, in vivo, was studied with NaH14CO3 as a tracer, in normal adult, starved adult, normal newborn, "thiamine-deficient" adult and "tumor bearing" rats and in Yoshida ascites-tumor cells. ...
Selective catechol oxidations with diphenyl selenoxide. Applications to phenolic coupling.
(Elsevier, 1979)
Diphenyl selenoxide was used as a mild and selective oxidant in the synthesis of aporphines and homoaporphines. An intramolecular coupling between a phenol and a catechol is believed to proceed catechol selenurane intermediates.
Specific steroid response from a nonspecific DNA element
(Elsevier, 1994-06)
A fundamental dilemma of steroid hormone regulation is how specific transcription is attained in vivo when several receptors recognize the same DNA sequence in vitro. We have identified an enhancer of the mouse sex-limited ...
Chronic use of benzodiazepines and psychomotor and cognitive test performance
(Springer-Verlag, 1986-04)
The performance of 43 long-term users (average = 5 years) of benzodiazepine (BZ) medications was examined on a battery of behavioral tasks, cognitive tests, and subjective mood rating scales. The performance of the chronic ...
Immunochemical studies of the combining sites of the two isolectins, A4 and B4, isolated from Bandeiraea simplicifolia
(Elsevier, 1979-11)
The specificity of two isolectins, A4 and B4, of Bandeiraea simplicifolia lectin I (BS-I) was studied by quantitative precipitin, precipitin inhibition, as well as by competitive binding assays using various blood group ...
Electron paramagnetic resonance studies on nitrogenase. II. Interaction of adenosine 5'-triphosphate with azoferredoxin
(Elsevier, 1973-02-22)
The interaction of ATP with both iron-sulfur proteins of nitrogenase from Clostridium pasteurianum, azoferredoxin and molybdoferredoxin, has been studied by low-temperature EPR spectroscopy. ATP in the presence of Mg2+ ...
Quantitative effects of unsaturated fatty acids in microbial mutants : VII. Influence of the acetylenic bond location on the effectiveness of acyl chains
(Elsevier, 1977-03-25)
The ability of a series of 18 carbon acetylenic fatty acids to fulfill the unsaturated fatty acid requirements of Escherichia coli and Saccharomyces cerevisiae was investigated. Despite their high melting points (>40[deg]C), ...
Generation of drug metabolite antigenicity in the intestinal mucosa
(Elsevier, 1986-08)
Both nitroreductase and transglutaminase activities have been assayed in the 10 000 x g supernatant fluids of rat intestine homogenates after Triton X-100 treatment. Incubation of 14C-nitrofurantoin in the intestine ...