Assertion: bioprosthetic valve | /r/MadeOf | animal tissue
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Bioprosthetic valves are usually made from animal tissue (heterograft/xenograft) mounted on a metal or polymer support.
text: Bioprosthetic valves are usually made from animal tissue (heterograft/xenograft) mounted on a metal or polymer support.