About: http://webisa.webdatacommons.org/104020810

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	However, one of the tests used to measure blood clotting in a test tube (PTT) does require factor XII. Longer than normal PTT results is what often triggers testing
http://www.w3.org/ns/prov#wasQuotedFrom	erlanger.org