Lactose Fermenter (LF) and Non-Lactose Fermenter (NLF) Gram-Negative Bacteria: Introduction, List of LF and NLF Bacteria, and Keynotes

LF and NLF Colonies of Klebsiella and Pseudomonas on MacConkey medium

Introduction of LF and NLF Gram-Negative Bacteria on MacConkey Medium MacConkey agar/ medium is recommended for use as a selective, differential, and indicator growth medium for the isolation of gram-negative bacilli including coliform organisms and enteric pathogens, on the basis of lactose fermentation. Peptones (meat …

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