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sir ernst boris chain

n.
1.British biochemist (born in Germany) who isolated and purified penicillin, which had been discovered in 1928 by Sir Alexander Fleming (1906-1979)

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  • sir edmund percival hillary
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  • sir frederick gowland hopkins
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  • sir frederick grant banting
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  • sir frederick william herschel
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  • through and through
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    Idiom of the Day

    time out
    the time when a game or other event is temporarily stopped for some reason
    During the game we took some time out to rest.



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