Assertion: main portal vein | /r/CapableOf | leave portal veins
Facets:
value: at the same level
type: OTHER
Source sentences:
text: diagrams show that the main portal vein (1) divides into the right (2) and left portal veins.
text: The right portal vein is not present, and the main portal vein divides into the right anterior, right posterior, and left portal veins at the same level.