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Gentamicin as a selective agent for the isolation of beta haemolytic streptococci
  1. William A. Black1,
  2. Frances Van Buskirk
  1. Department of Microbiology, St. Joseph's Hospital, London, Ontario, Canada

    Abstract

    The isolation of beta haemolytic streptococci was compared using Columbia sheep blood agar with and without gentamicin in a final concentration of 5·5 micrograms per ml. The inclusion of gentamicin gave greatly improved results whenever the isolation of this organism in pure culture was complicated by overgrowth with Gram-negative bacilli or staphylococci.

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    Footnotes

    • 1 Present address: Dept. of Microbiology, University Hospital, London, Ontario, Canada.

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