Umbilical Cord Ring - handmade by designers at Tree of Opals
Anatomy and Physiology of the Umbilicus | SpringerLink
Midgut development in rat embryos using microcomputed tomography | Communications Biology
Ethiopian Veterinary Doctors - All About Umbilical Hernia: An umbilical hernia is a protrusion (outward bulging) of the abdominal lining, abdominal fat, or a portion of abdominal organ(s) through the area around