Assertion: portal vein | /r/HasProperty | triad bile secretion acinus
Facets:
Source sentences:
text: Name Shape Model classical lobule hexagonal; divided into concentric centrilobular, midzonal, periportal parts anatomical portal lobule triangular; centered on a portal triad bile secretion acinus  elliptical or diamond-shaped; divided into zone I (periportal), zone II (transition zone), and zone III (pericentral) blood flow and metabolic