About: http://webisa.webdatacommons.org/98637770

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The valve body can be made of materials such as biocompatible pyrolitic carbon (mechanical valves), porcine or bovine pericardium tissue (bioprosthetic valves), or silicone or polyurethane (polymer valves).
http://www.w3.org/ns/prov#wasQuotedFrom	google.es