Studies on the Hypophyseal Hormone of Fishes I
نویسندگان
چکیده
منابع مشابه
Studies on hypophyseal isografts in mice. I. Biologic aspects.
Experiments are reported on the induction of mammary carcinoma in intact, mammary tumor agent (MTA)-free female ( 9 020 x a" DBAf)Fi mice by single and multiple (4) prolactinproducing hypophyseal isografts in the kidney. Tumor incidences varying between 67 and 88 % were recorded in the treated groups as against 2% in virgin controls. Identical treatment of intact and castrated males proved tota...
متن کاملUltracentrifugation of hypophyseal growth hormone.
Sedimentation velocity was measured in a Spinco ultracentrifuge’ operating at 165,000 X g. The hormone solutions (0.5 per cent) were prepared with borate buffer of pH 9.7 or saline at pH 9.1. Table I presents a typical run in a borate buffer; the sedimentation velocity constant was calculated by the procedure described by Svedberg and Pedersen (3). It may be noted that the individual values of ...
متن کاملThe Hypophyseal Growth Hormone, Nature and Actions
many formulae and figures. Its many chapter subheadings give the book its rather terse, outline form. A discussion of methods of isolation, characterization, and determination of purity is followed by successive chapters dealing with reaction rates as a function of substrate concentration, inhibitor action, temperature, and pH. Thermodynamic concepts are well developed in chapters on energetics...
متن کاملSedimentation behavior of hypophyseal growth hormone.
In a previous publication, it was reported that solution of the hypophyseal growth hormone in acetate buffers results in an increment of its intrinsic viscosity with an accompanying increase of molecular weight (1). Later, Smith et al. (2) confirmed these observations in ultracentrifugal studies. The purpose of this present investigation has been to study the sedimentation behavior of the hormo...
متن کاملZone electrophoresis of hypophyseal growth hormone (somatotropin) on starch.
Growth hormone preparations were obtained by methods previously described (1, 3) from the anterior lobes of ox pituitary glands. The biological activity of these preparations was estimated by the tibia test (5) in hypophysectomized rats. Electrophoretic experiments were carried out in a cold room at 3”. The technique of zone electrophoresis is a modification of the method of Kunkel and Slater (...
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ژورنال
عنوان ژورنال: NIPPON SUISAN GAKKAISHI
سال: 1952
ISSN: 1349-998X,0021-5392
DOI: 10.2331/suisan.17.8-9_25