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Diff./SelectiveMedia

Selective gram+ & gram-

Media TypeGram+/-,selective/differential
PEA Selective Gram + - selective: phenylethyl alcohol inhibits gram "-" growth
MSA Selective Gram + - selective: high salt inhibits gram "-" growth - differential: contains mannitol & pH indicator [mannitol fermenters (+): yellow]
Columbia CNA Selective Gram + - selective: colistin & nalidixic inhibits gram - growth - differential: contains sheep blood for different hemolytic patterns [alpha: green zone, beta: clear zone, gamma: no zone]
MAC Selective Gram - - selective: bile salt & crystal violet inhibits gram "+" growth - differential: differentiates between lactose/non-lactose fermenters
HEA Selective Gram - - selective: bile salt inhibits gram "+" growth - differential: lactose (orange/yellow colonies), non-lactose fermenters, H2S producers (blue/green colonies)
EMB Selective Gram - - selective: eosin & methyl blue inhibits gram "+" growth - differential: differentiates between lactose (colored colonies) and non-lactose fermenters (colorless colonies)
Selective Media inhibits certain bacteria and favors growth of others
Differential Media visualizes metabolic differences between bacterial types
Created by: user-1812645
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