Embryology of the sperm and egg.
D000818:Animals; D002642:Chick Embryo; D002988:Cloaca; D005260:Female; D006801:Humans; D008297:Male; D008650:Mesonephros; D051379:Mice; D010063:Ovum; D011247:Pregnancy; D051381:Rats; D013094:Spermatozoa; D014566:Urogenital System / Q000196:embryology*