4 Common Enterobacteriaceae (and a key non-fermenter) on MacConkey Agar 🧫 MacConkey agar helps differentiate Gram-negative bacteria based on lactose fermentation and colony morphology: 🟣 Escherichia coli • Strong lactose fermenter • Bright pink to red colonies • Often with bile precipitate 🟣 Klebsiella pneumoniae • Lactose fermenter • Large, mucoid, pink colonies • Thick capsule gives a glossy appearance ⚪ Proteus mirabilis • Non-lactose fermenter • Pale, colorless colonies • Swarming inhibit

MacConkey agar is NOT used only for cultivating GRAM NEGATIVE bacteria ⁉️ All you need to know about #Macconkey_agar #culture_media in #Microbiology And many answers for these questions!!! 🔵 Why Macconkey is selective and differentia media!??! 🔴 Differnt Types of Macconkey Agar and their uses. ⚫ Examples of microorganisms growing on Mac.A (E coli, Klebsiella, Enterobacter, Serratia, Citrobacter, Salmonella, Shigella, proteus, Pseudomonas) What other modifications do you know about MacConkey ag