Vaccine development: necessity as the mother of invention.
Burnette
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D016915:AIDS Vaccines / Q000302:isolation & purification; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D014612:Vaccines / Q000266:history*
D016915:AIDS Vaccines; D014612:Vaccines