Fertility control.
D055598:Chemical Phenomena; D002621:Chemistry; D003270:Contraceptive Agents / Q000008:administration & dosage*; D003273:Contraceptive Devices; D005193:Family Planning Services; D005260:Female; D005544:Forecasting; D007987:Gonadotropin-Releasing Hormone / Q000008:administration & dosage / Q000031:analogs & derivatives; D006072:Gossypol / Q000008:administration & dosage; D006801:Humans; D008297:Male; D011453:Prostaglandins / Q000008:administration & dosage; D013256:Steroids / Q000008:administration & dosage
D003270:Contraceptive Agents; D011453:Prostaglandins; D013256:Steroids; D007987:Gonadotropin-Releasing Hormone; D006072:Gossypol