title: Failure of exogenous androgen to prevent regression of the initial segments of the rat epididymis after efferent duct ligation or orchidectomy.
mesh_terms: D000818:Animals; D002369:Castration; D004822:Epididymis / Q000187:drug effects* / Q000502:physiology / Q000648:ultrastructure; D004848:Epithelium / Q000648:ultrastructure; D008297:Male; D009929:Organ Size / Q000187:drug effects; D051381:Rats; D012671:Seminiferous Tubules / Q000502:physiology; D013737:Testis / Q000502:physiology*; D013739:Testosterone / Q000494:pharmacology*; D014649:Vas Deferens / Q000648:ultrastructure
chemical_list: D013739:Testosterone