title: Reduced gonadotropin release in response to progesterone or gonadotropin releasing hormone (GnRH) in old female rats.
mesh_terms: D000375:Aging; D000818:Animals; D002369:Castration; D005260:Female; D005640:Follicle Stimulating Hormone / Q000378:metabolism*; D007987:Gonadotropin-Releasing Hormone / Q000494:pharmacology*; D007986:Luteinizing Hormone / Q000378:metabolism*; D051381:Rats; D013739:Testosterone / Q000494:pharmacology
chemical_list: D007987:Gonadotropin-Releasing Hormone; D013739:Testosterone; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone