About: http://webisa.webdatacommons.org/176769741

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 addition to normal production by the body, free radicals result from environmental stresses such as smoking and pollution.
http://www.w3.org/ns/prov#wasQuotedFrom	vitabase.com