The endocrin control of seasonal reproductive function in the ewe: a marked change in response to the negative feedback action of estradiol on luteinizing hormone secretion.
D000818:Animals; D002369:Castration; D004343:Drug Implants; D004958:Estradiol / Q000494:pharmacology*; D004971:Estrus / Q000187:drug effects*; D005260:Female; D007986:Luteinizing Hormone / Q000378:metabolism*; D011247:Pregnancy; D012098:Reproduction; D012621:Seasons; D012756:Sheep / Q000502:physiology*
D004343:Drug Implants; D004958:Estradiol; D007986:Luteinizing Hormone