About: http://webisa.webdatacommons.org/189855175

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	Developing an HIV vaccine is especially difficult because HIV has protected itself very effectively against the most powerful weapon of the human immune system -- antibodies.
http://www.w3.org/ns/prov#wasQuotedFrom	caltech.edu