About: http://webisa.webdatacommons.org/378384693

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 the 1950???s, a breakthrough that enabled viruses to grow in tissue cultures led to the development of both live attenuated vaccines and inactivated vaccines for measles, polio, and other diseases.
http://www.w3.org/ns/prov#wasQuotedFrom	project-syndicate.org