About: http://webisa.webdatacommons.org/52225992

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 second vaccine revolution took place recently, as the tools of molecular biology enabled researchers to identify and isolate specific antigens-usually proteins or protein fragments-from viruses, bacteria, and other infectious agents.
http://www.w3.org/ns/prov#wasQuotedFrom	questia.com