title: New approaches to contraception.
mesh_terms: D000022:Abortion, Spontaneous / Q000139:chemically induced; D000941:Antigens / Q000008:administration & dosage; D006063:Chorionic Gonadotropin; D003267:Contraception; D003270:Contraceptive Agents; D003281:Contraceptives, Postcoital; D003534:Cyproterone / Q000627:therapeutic use; D004717:Endometrium / Q000187:drug effects; D005260:Female; D005547:Foreign Bodies; D006801:Humans; D007434:Intrauterine Devices; D008297:Male; D008525:Medroxyprogesterone; D008598:Menstruation / Q000187:drug effects; D008722:Methods; D009640:Norethindrone; D010060:Ovulation / Q000187:drug effects; D011247:Pregnancy; D011372:Progestins / Q000008:administration & dosage; D011453:Prostaglandins / Q000627:therapeutic use; D012869:Skin Absorption; D013094:Spermatozoa / Q000187:drug effects; D013245:Sterilization, Reproductive; D013488:Suppositories; D014649:Vas Deferens / Q000601:surgery
chemical_list: D000941:Antigens; D006063:Chorionic Gonadotropin; D003270:Contraceptive Agents; D003281:Contraceptives, Postcoital; D011372:Progestins; D011453:Prostaglandins; D013488:Suppositories; D003534:Cyproterone; D008525:Medroxyprogesterone; D009640:Norethindrone