[Study of feedback mechanism of steroid hormones on the hypothalamic center].
D000818:Animals; D004958:Estradiol / Q000502:physiology; D005246:Feedback; D005260:Female; D012739:Gonadal Steroid Hormones / Q000502:physiology*; D006065:Gonadotropins, Pituitary / Q000032:analysis; D007031:Hypothalamus / Q000502:physiology*; D009640:Norethindrone / Q000502:physiology; D010902:Pituitary Gland / Q000502:physiology*; D011374:Progesterone / Q000502:physiology; D051381:Rats; D013739:Testosterone / Q000502:physiology
D012739:Gonadal Steroid Hormones; D006065:Gonadotropins, Pituitary; D013739:Testosterone; D011374:Progesterone; D004958:Estradiol; D009640:Norethindrone