title: Preputial separation as an external sign of pubertal development in the male rat.
mesh_terms: D000367:Age Factors; D000818:Animals; D001835:Body Weight / Q000187:drug effects; D002369:Castration; D013196:Dihydrotestosterone / Q000097:blood / Q000494:pharmacology; D004958:Estradiol / Q000494:pharmacology; D006234:Handling, Psychological; D007986:Luteinizing Hormone / Q000097:blood; D008297:Male; D010413:Penis / Q000254:growth & development*; D051381:Rats; D012741:Sexual Maturation / Q000187:drug effects; D013091:Spermatogenesis / Q000187:drug effects; D013739:Testosterone / Q000097:blood / Q000494:pharmacology
chemical_list: D013196:Dihydrotestosterone; D013739:Testosterone; D004958:Estradiol; D007986:Luteinizing Hormone