Prostaglandins.
D003270:Contraceptive Agents; D005260:Female; D005298:Fertility / Q000187:drug effects; D006801:Humans; D008297:Male; D011247:Pregnancy; D011453:Prostaglandins / Q000494:pharmacology / Q000502:physiology
D003270:Contraceptive Agents; D011453:Prostaglandins