Alterations in the control of luteinizing hormone pulse frequency underlie the seasonal variation in estradiol negative feedback in the ewe.
D000780:Anestrus; D000818:Animals; D002369:Castration; D004958:Estradiol / Q000494:pharmacology*; D004971:Estrus; D005246:Feedback; D005260:Female; D007031:Hypothalamus / Q000187:drug effects; D008027:Light; D007986:Luteinizing Hormone / Q000378:metabolism*; D010902:Pituitary Gland / Q000187:drug effects; D010906:Pituitary Hormone-Releasing Hormones / Q000494:pharmacology; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology; D012621:Seasons; D012756:Sheep
D010906:Pituitary Hormone-Releasing Hormones; D011374:Progesterone; D004958:Estradiol; D007986:Luteinizing Hormone