PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Free radicals such as hydrogen peroxide, hydroxyl radicals, and organic free radicals are produced in vivo by enzymatic, spontaneous, radiation, and photochemical oxidation reactions, or may be generated by direct oxidative attack on cell components.
http://www.w3.org/ns/prov#wasQuotedFrom
  • freepatentsonline.com