The ovum, the uterus and birth control.
D000818:Animals; D000917:Antibody Formation; D001755:Blastocyst / Q000187:drug effects / Q000502:physiology; D003300:Copper / Q000494:pharmacology; D010064:Embryo Implantation; D004717:Endometrium; D005193:Family Planning Services / Q000379:methods*; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D051379:Mice; D010063:Ovum / Q000166:cytology / Q000502:physiology*; D011247:Pregnancy; D011374:Progesterone / Q000502:physiology; D014599:Uterus / Q000502:physiology*
D011374:Progesterone; D003300:Copper