title: A change in the frequency of the degenerating spermatogonia in the rat.
abstract: In right and left testes of the same animals, the frequencies of degeneration of type A spermatogonia were almost equal. When one testis was removed, there was a negative correlation of the frequency of the degenerating spermatogonia in this testis and the other after 25 days.
mesh_terms: D000818:Animals; D002369:Castration; D002452:Cell Count; D002470:Cell Survival; D008297:Male; D051381:Rats; D013093:Spermatogonia / Q000502:physiology*; D013094:Spermatozoa / Q000502:physiology*; D013737:Testis / Q000166:cytology / Q000502:physiology*