What type of bacteria are inhibited on MacConkey agar?

Sourav PanDecember 7, 2024

Answered

MacConkey agar is a selective and differential medium that inhibits the growth of gram-positive bacteria while allowing gram-negative bacteria to grow. It contains bile salts and crystal violet, which inhibit gram-positive organisms, and also differentiates bacteria based on their ability to ferment lactose (lactose-fermenters produce pink colonies, while non-lactose fermenters produce colorless colonies).

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