A cell culture of neonatal pig testes has been studied. Leydig cells, Sertoli cells, sex cells and fibroblasts have been identified by cytologic and cytochemical research methods, Gonadotropin concentration (0.1 U/ml) of nutritional medium, increases proliferation of the Leydig cells and increases their 3-beta-ol-steroiddehydrogenase activity as well as increases amount of lipid inclusions and stimulates testosterone production. The cell culture can be used to treat some forms of hypogonadism.
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