title: The reproductive cycle of the ring-tailed lemur (Lemur catta): sex steroid levels and sexual receptivity under controlled photoperiods.
mesh_terms: D000818:Animals; D004958:Estradiol / Q000097:blood*; D004971:Estrus; D005260:Female; D007900:Lemur / Q000502:physiology*; D008027:Light; D008297:Male; D011247:Pregnancy; D011374:Progesterone / Q000097:blood*; D012726:Sexual Behavior, Animal; D011443:Strepsirhini / Q000502:physiology*; D014626:Vaginal Smears
chemical_list: D011374:Progesterone; D004958:Estradiol