The umbilicus.
D000009:Abdominal Muscles / Q000002:abnormalities; D000015:Abnormalities, Multiple; D005260:Female; D006099:Granuloma / Q000473:pathology; D006554:Hernia, Umbilical / Q000151:congenital / Q000453:epidemiology / Q000601:surgery / Q000628:therapy; D006801:Humans; D007231:Infant, Newborn; D007239:Infections / Q000473:pathology; D009658:North Dakota; D011127:Polyps / Q000473:pathology; D011247:Pregnancy; D013577:Syndrome; D014059:Tongue / Q000002:abnormalities; D014469:Umbilical Arteries / Q000002:abnormalities; D014470:Umbilical Cord / Q000098:blood supply; D014472:Umbilicus; D014497:Urachus; D014816:Vitelline Duct