je salk

Science Dictionary
Salk   (sôlk)  Pronunciation Key 
American microbiologist who in 1954 developed the first effective vaccine against polio, using an inactivated form of the virus. Salk's vaccine, which was administered by injection, was widely used until 1959 when Albert Sabin introduced an orally administered vaccine derived from a live form of the virus.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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