About: http://webisa.webdatacommons.org/100756044

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	They can be products of the cancer cells themselves, or of the body in response to cancer or other conditions.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com