MacConkey agar serves which purpose when used in the bacterial fecal culture?

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The slightly selective agar should support growth of most Enterobacteriaceae,Vibrio,and other possible pathogens;MacConkey agar works well.Some laboratories use eosin-methylene blue (EMB),which is slightly more inhibitory.All lactose-negative colonies should be tested further,ensuring adequate detection of most vibrio and most pathogenic Enterobacteriaceae.Lactose-positive vibrio (Vibrio vulnificus),pathogenic E.coli,some Aeromonas spp. ,and Plesiomonas spp.may not be distinctive on MacConkey agar.

MacConkey Agar Serves Which Purpose When Used in the Bacterial