Microbiology Quiz
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MICROBIAL GROWTH AND CONTROL
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A urine sample is plated on a chromogenic agar designed for UTI pathogen identification. The plate reveals two colony types after incubation: large, smooth, deep pink colonies and smaller, turquoise-blue colonies. According to the manufacturer's guide, pink indicates E. coli and blue indicates Enterococcus. What is the primary mechanism that allows this color differentiation?
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