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[Comparative study of biological effect of purified gonadotropins of sturgeon (Acepenser stellatus) and carp (Cyprinus carpio)].

A comparison was made of the biological effect of purified gonadotropins of the sevryuga and the carp on the activation of adenyl cyclase in the homogenate of the goldfish ovary, the reaction of spermiation in two species of frogs, and the in vitro maturation of oocytes of two amphibian species and sevryuga. The ratio of specific activities of the preparations under study was shown to vary markedly with respect to test-subject and test-reaction. The data obtained suggest, thus, qualitative differences in the effect of the gonadotropins under study and the response of organs-targets. It is proposed to use the system of in vitro maturation of amphibian oocytes for studying the phenomenon of species specificity of gonadotropins of lower vertebrates.