Assertion: abdominal umbilical vein | /r/HasProperty | single vessel
Facets:
Source sentences:
text: The intra-abdominal umbilical vein was a single vessel that was connected to the ductus venosus and returned to the right atrium (Fig. 2).
text: The intra-abdominal umbilical vein is a single vessel connected to the ductus venosus