title: Estrus and LH release in ovariectomized heifers following vaginal devices containing ovarian steroids.
mesh_terms: D000818:Animals; D002369:Castration / Q000662:veterinary*; D002417:Cattle / Q000502:physiology*; D004958:Estradiol / Q000008:administration & dosage*; D004971:Estrus / Q000187:drug effects*; D005260:Female; D007986:Luteinizing Hormone / Q000378:metabolism*; D011247:Pregnancy; D011374:Progesterone / Q000008:administration & dosage*; D014621:Vagina
chemical_list: D011374:Progesterone; D004958:Estradiol; D007986:Luteinizing Hormone