title: Negative feedback action of progesterone on tonic luteinizing hormone secretion in the ewe: dependence on the ovaries.
mesh_terms: D000818:Animals; D002369:Castration; D004343:Drug Implants; D004958:Estradiol / Q000097:blood / Q000494:pharmacology; D004971:Estrus; D005246:Feedback; D005260:Female; D007986:Luteinizing Hormone / Q000378:metabolism*; D010053:Ovary / Q000502:physiology*; D011247:Pregnancy; D011374:Progesterone / Q000097:blood / Q000494:pharmacology*; D012756:Sheep / Q000502:physiology*; D012826:Silicone Elastomers
chemical_list: D004343:Drug Implants; D012826:Silicone Elastomers; D011374:Progesterone; D004958:Estradiol; D007986:Luteinizing Hormone