title: [Mechanism of contraceptive effect of low progestin doses].
mesh_terms: D000818:Animals; D003276:Contraceptives, Oral; D005040:Ethynodiol Diacetate / Q000008:administration & dosage* / Q000494:pharmacology; D005260:Female; D006801:Humans; D008535:Megestrol / Q000008:administration & dosage* / Q000494:pharmacology; D010060:Ovulation / Q000187:drug effects; D051381:Rats
chemical_list: D003276:Contraceptives, Oral; D005040:Ethynodiol Diacetate; D008535:Megestrol
vernacular_title: K voprosu o mekhanizme kontratseptivnogo deĭstviia malykh doz progestinov.