About: http://webisa.webdatacommons.org/421894028

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	In many instances, chemical tests are performed on biological fluids such as urine, blood serum, plasma, cerebrospinal fluid and the like.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com