title: The effect of human chorionic gonadotropin on plasma steroid levels in young and old men.
mesh_terms: D000328:Adult; D000368:Aged; D000736:Androstenes / Q000097:blood*; D006063:Chorionic Gonadotropin / Q000097:blood* / Q000494:pharmacology*; D004958:Estradiol / Q000097:blood*; D004970:Estrone / Q000097:blood*; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D013739:Testosterone / Q000097:blood*
chemical_list: D000736:Androstenes; D006063:Chorionic Gonadotropin; D004970:Estrone; D013739:Testosterone; D004958:Estradiol