Abstract
Hormonal preparation of female egg donors is one of the first stages in obtaining genetically modified animals by microinjected zygote transplantation. A large number of embryos synchronized in development can be obtained by a superovulation procedure based on treating female animals with gonadotropins. As a rule, drugs from different manufacturers differ markedly in terms of their efficacy. In the context of sanctions imposed on the Russian Federation, attention should be paid to domestic hormonal drugs, thus substantiating their objective assessment. It was shown that different batches of the FSH-SUPER drug, used mainly for hormonal treatment of farm animals, differed in stimulating effect on superovulation in female mice. At the same time, the efficacy of this drug surpassed that of Follimag (Mosagrogen, Russia).
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