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i think is gram + It is gram positive, usually occurring in chains and pairs of gram positive cocci. It is also a beta hemolytic organism, meaning it will completely lyse RBC's in a zone around individual colonies. If you are using a Mannitol Salt agar medium, in this zone then it will be transparent.

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15y ago

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streptococcus is gram positive. However, the strep that causes strep throat is caused by group A beta hemolytic streptococci.

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16y ago
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Q: Is streptococcus pyogenes gram or gram?
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