Contraceptive development.
D000818:Animals; D002584:Cervix Uteri / Q000502:physiology; D006063:Chorionic Gonadotropin / Q000502:physiology; D003267:Contraception; D003270:Contraceptive Agents / Q000600:supply & distribution / Q000627:therapeutic use; D003280:Contraceptives, Oral, Synthetic / Q000600:supply & distribution; D003338:Corpus Luteum / Q000502:physiology; D010064:Embryo Implantation; D005187:Fallopian Tubes / Q000502:physiology; D005260:Female; D000882:Haplorhini; D006801:Humans; D008297:Male; D011817:Rabbits; D012106:Research; D013083:Sperm Transport; D013737:Testis / Q000502:physiology
D006063:Chorionic Gonadotropin; D003270:Contraceptive Agents; D003280:Contraceptives, Oral, Synthetic