title: Biphasic effect of estrogen on the sensitivity of the pituitary to luteinizing hormone-releasing factor (LRF).
mesh_terms: D000818:Animals; D002369:Castration; D004305:Dose-Response Relationship, Drug; D004958:Estradiol / Q000008:administration & dosage / Q000494:pharmacology*; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood; D007987:Gonadotropin-Releasing Hormone / Q000008:administration & dosage / Q000494:pharmacology*; D007986:Luteinizing Hormone / Q000097:blood; D010902:Pituitary Gland / Q000187:drug effects*; D011374:Progesterone / Q000008:administration & dosage / Q000494:pharmacology; D011863:Radioimmunoassay; D051381:Rats; D013997:Time Factors
chemical_list: D007987:Gonadotropin-Releasing Hormone; D011374:Progesterone; D004958:Estradiol; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone