About: http://webisa.webdatacommons.org/378393814

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	One such device disclosed in U.S. Pat. No. 5,474,528 is a hydrogel skin patch that releases a photoactivated pharmaceutical agent to skin when illuminated with light, for example during laser therapy.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com