Description
• Intended Use: Columbia CNA Agar is used with blood for the selective isolation of Gram-positive cocci.
• Product Summary: Ellner et al. described Columbia CNA Agar as a variation of Columbia Blood Agar Base that is selective for
Gram-positive cocci. Colistin and Nalidixic Acid are added to the formula, selecting for Gram-positive organisms and fungi by
suppressing Gram-negative bacteria. Columbia CNA Agar is used as a primary plating medium for urine cultures.
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