Columbia colistin–nalidixic acid agar

an agar medium containing peptone, cornstarch, sodium chloride, colistin, nalidixic acid, and sheep blood, used for the selective culture of gram-positive cocci, especially Proteus species. Called also CNA a.

Medical dictionary. 2011.

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  • CNA agar — Columbia colistin–nalidixic acid a …   Medical dictionary

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