Gentamicin as a selective agent for the isolation of beta haemolytic streptococci
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.
Footnotes
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↵1 Present address: Dept. of Microbiology, University Hospital, London, Ontario, Canada.
