Science Image Library: MacConkey's Agar (MAC)
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MacConkey's Agar Bacterial Growth Medium
from Science Prof Online
Various Gram-negative bacterial colony morphology grown on MacConkey's Agar (MAC)
Bacterial growth on MacConkey's Agar. Lac - Salmonella left, Lac + E.coli right.
E. coli bacteria written and growing on MacConkey's Agar.
E. coli lac + bacterial growth on MacConkey's Agar.
E. coli lac + bacterial growth on MacConkey's Agar. On this plate, the MAC Agar and bacteria have dried out.
MacConkey's Agar showing lactose positive pink colony.
MacConkey's Agar growing a pink smiley face of E. coli.
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Page last updated 2/25/2012
MacConkeys (back) & TSY agar (front) growing environmental sample from kitchen sink.
Unknown bacteria plated on Mannitol Salt Agar (left) and MacConkey's (right). Note that there is no growth on MacConkey's. So what do you think the unknown bacterium is?
Bacterial growth on MacConkey's Agar. Lac - Salmonella left, Lac + E.coli right.
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