About: http://webisa.webdatacommons.org/334532264

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	Date reviewed: 4/27/1998Tumor markersTumor markers are substances that can often be detected in higher-than-normal amounts in the blood, urine, or body tissues of some patients with certain types of cancer.
http://www.w3.org/ns/prov#wasQuotedFrom	liversociety.org