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Tiny little colonies grow on your EMB agar during the confirmed test in water assessment
testing. When you Gram stain, these bacteria turn out to be short chains of gram-positive coccus-
shaped bacteria. What do you think?
There is fecal Staphylococcus aureus in the water sample.
There are spore-forming bacteria in the water sample.
These are mutant E. coli colonies.
The water sample contains some gram-positive bacteria that can grow on EMB.

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