[Destruction and regeneration of the seminiferous tubules after local x-ray irradiation of the testes of sexually mature rats].

It was established that the local X-irradiation (1000 R) of testes of the adult rats results a total destruction of seminiferous tubules. The restitution of the organ structure proceeds via formation of new seminiferous tubules in which spermatogenic epithelium later develops. Rete testis and germ cells preserved in its epithelium from embryogenesis are a source of regeneration material. The results obtained favour the suggestion about the dynamic structure of mammalian testis.