Portland Press Ltd.

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Methods of paper chromatography of steroids applicable to the study of steroids in mammalian blood and tissues
Portland Press Ltd. - Tập 50 Số 3 - Trang 370-378 - 1952
I. E. Bush
Potentiometric determination of chloride in biological fluids
Portland Press Ltd. - Tập 52 Số 3 - Trang 502-505 - 1952
P. H. Sanderson
Developmental and regional variations in ribonucleic acid synthesis on cerebral chromatin
Portland Press Ltd. - Tập 115 Số 2 - Trang 341-349 - 1969
Stephen C. Bondy, Sidney Roberts
1. Chromatin was prepared from purified nuclei isolated from liver and cerebral regions of the rat. 2. The capacity of these preparations to promote RNA synthesis in the presence of bacterial RNA polymerase was determined. 3. The rate of RNA synthesis on chromatin was normally 12–21% of the rate observed with native DNA, but was markedly stimulated on addition of 200mm-ammonium sulphate. 4. At phy... hiện toàn bộ
The substrate specificity of purine phosphoribosyltransferases in Schizosaccharomyces pombe
Portland Press Ltd. - Tập 122 Số 4 - Trang 415-420 - 1971
Anna De Groodt, E. P. Whitehead, H. Heslot, L. Poirier
1. The activities of the purine phosphoribosyltransferases (EC 2.4.2.7 and 2.4.2.8) in purine-analogue-resistant mutants of Schizosaccharomyces pombe were checked. An 8-azathioxanthine-resistant mutant lacked hypoxanthine phosphoribosyltransferase, xanthine phosphoribosyltransferase and guanine phosphoribosyltransferase activities (EC 2.4.2.8) and appeared to carry a single mutation. Two 2,6-diami... hiện toàn bộ
The reaction between metmyoglobin and hydrogen peroxide
Portland Press Ltd. - Tập 52 Số 3 - Trang 511-517 - 1952
Philip George, D. H. Irvine
Solution structures of ferrihaem in some dipolar aprotic solvents and their binary aqueous mixtures
Portland Press Ltd. - Tập 115 Số 2 - Trang 279-285 - 1969
Stanley B. Brown, I. R. Lantzke
1. Conductivity and u.v. and visible spectroscopic techniques were used to investigate the solution structure of the prosthetic group of the ferric haemoproteins (ferrihaem) in dimethyl sulphoxide, NN-dimethylacetamide, NN-dimethylformamide and sulpholane, and certain of their aqueous mixtures. 2. In neutral or acid dimethyl sulphoxide, chlorohaemin is monomeric and completely dissociated into Cl−... hiện toàn bộ
A study of the inhibition of catalase by 3-amino-1:2:4-triazole
Portland Press Ltd. - Tập 68 Số 3 - Trang 468-475 - 1958
E. Margoliash, Abraham Novogrodsky
Development and characteristics of an oestrogen sulphotransferase in placenta and uterus of the pregnant mouse. Comparison between mouse and rat
Portland Press Ltd. - Tập 216 Số 2 - Trang 451-457 - 1983
R. Hobkirk, Catherine Cardy, Forough Saidi, T. G. Kennedy, Lisa Girard
The mouse placenta possesses a soluble oestrogen sulphotransferase activity which increases markedly from at least 12 days of gestation until term. At about 16 days of gestation, a similar activity is found in the uterus. This activity also increases until term and disappears rapidly post partum. The uterine enzyme activity appears to require the presence of the foetal unit for its onset, since un... hiện toàn bộ
Phospholipids. 3. On the chromatographic separation of glycerophospholipids
Portland Press Ltd. - Tập 60 Số 3 - Trang 353-363 - 1955
C. H. Lea, D. N. Rhodes, R. D. Stoli
Sterol metabolism. 3. The distribution and transport of sterols across the intestinal mucosa of the guinea pig
Portland Press Ltd. - Tập 67 Số 2 - Trang 308-316 - 1957
J. Glover, C. Green
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