About: http://webisa.webdatacommons.org/287300454

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	The body???s immune system is designed to produce various chemical factors to fight foreign substances, such as bacteria, viruses and other proteins that the immune system perceives as threatening.
http://www.w3.org/ns/prov#wasQuotedFrom	brown.edu