Assertion: umbilical cord's artery | /r/HasProperty | 1 vein
Facets:
Source sentences:
text: The umbilical cord usually has 2 arteries, 1 vein, the allantois, the omphalomesenteric duct remnant and Wharton’s
text: Finally, only the body stalk remains with its umbilical vessels (2 arteries, 1 vein), which are surrounded by an amniotic epithelial layer.