MacConkey s agar is both Selective and Differential media that is used – McqOptions

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1.	MacConkey s agar is both Selective and Differential media that is used primarily for the isolation of gram-negative bacteria. It consists of ................which inhibits the growth of gram-positive bacteria.
A.	Blood
B.	Peptone
C.	Bile salts
D.	Tryptophan
Answer» D. Tryptophan

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