title: Time factor in ovulation blockade in rats under differing lighting conditions.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D001683:Biological Clocks; D005260:Female; D008027:Light; D010060:Ovulation; D010424:Pentobarbital / Q000494:pharmacology*; D051381:Rats
chemical_list: D010424:Pentobarbital