About: http://webisa.webdatacommons.org/144392268

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	Free radicals such as superoxide anion (O2-???), hydrogen peroxide (H2O2), hydroxyl (OH-), and peroxyl radicals are involved in initiation and progression of oxidative damage to spermatozoa.
http://www.w3.org/ns/prov#wasQuotedFrom	clevelandclinic.org