Fig. 7: Streptococcus pyogenes Growing on Blood Agar with a Taxo A Disc

Note small, white opaque colonies, beta hemolysis (complete lysis of the red blood cells around the colonies), and sensitivity to the antibiotic bacitracin in the Taxo A® disc. 
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Microbiology Laboratory Manual by Gary E. Kaiser, PhD, Professor of Microbiology
is licensed under a Creative Commons Attribution 4.0 International License.
Last updated: November, 2021