title: Diurnal patterns of testosterone, dihydrotestosterone, estradiol, and cortisol in serum of rhesus males: relationship to sexual behavior in aging males.
mesh_terms: D000375:Aging; D000818:Animals; D002940:Circadian Rhythm; D013196:Dihydrotestosterone / Q000097:blood; D004958:Estradiol / Q000097:blood; D006728:Hormones / Q000097:blood*; D006854:Hydrocortisone / Q000097:blood; D008253:Macaca mulatta; D008297:Male; D012726:Sexual Behavior, Animal / Q000502:physiology*; D013739:Testosterone / Q000097:blood
chemical_list: D006728:Hormones; D013196:Dihydrotestosterone; D013739:Testosterone; D004958:Estradiol; D006854:Hydrocortisone