title: Inhibition of the progesterone-advanced LH surge at proestrus by nicotine.
mesh_terms: D000818:Animals; D004971:Estrus; D005260:Female; D007986:Luteinizing Hormone / Q000378:metabolism*; D009538:Nicotine / Q000494:pharmacology*; D010060:Ovulation; D010424:Pentobarbital / Q000494:pharmacology; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology*; D011863:Radioimmunoassay; D051381:Rats
chemical_list: D011374:Progesterone; D009538:Nicotine; D007986:Luteinizing Hormone; D010424:Pentobarbital