title: Biphasic effect of progesterone on the release of gonadotropin in rats.
mesh_terms: D000818:Animals; D002369:Castration; D002940:Circadian Rhythm; D004357:Drug Synergism; D004958:Estradiol / Q000494:pharmacology; D005260:Female; D005640:Follicle Stimulating Hormone / Q000097:blood*; D007986:Luteinizing Hormone / Q000097:blood* / Q000378:metabolism*; D010060:Ovulation / Q000187:drug effects; D011374:Progesterone / Q000008:administration & dosage / Q000494:pharmacology*; D011863:Radioimmunoassay; D051381:Rats; D013268:Stimulation, Chemical
chemical_list: D011374:Progesterone; D004958:Estradiol; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone