[The physiological basis of birth control].
D000818:Animals; D003267:Contraception / Q000379:methods*; D003276:Contraceptives, Oral / Q000494:pharmacology; D010064:Embryo Implantation; D005193:Family Planning Services; D005260:Female; D005306:Fertilization; D006801:Humans; D007434:Intrauterine Devices; D008297:Male; D011247:Pregnancy; D012098:Reproduction; D013245:Sterilization, Reproductive
D003276:Contraceptives, Oral