About: http://webisa.webdatacommons.org/389262143

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	Perhaps the best known test for a biological marker protein, or biomarker, called CA 27.29, misses many cases of recurrence and detects them late -- often after symptoms, such as difficulty breathing or bone pain, surface.
http://www.w3.org/ns/prov#wasQuotedFrom	sciencedaily.com