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alexandre emile john yersin

alexandre emile john yersin in Science
Yersin
  (yěr-sä')   
French bacteriologist who, working with Émile Roux, isolated the toxin that causes the symptoms of diphtheria. Yersin later discovered the bacillus that causes bubonic plague and developed a serum to protect against it.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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