Lactose Fermentation ______________________________________ Lacotse Fermenters (red) Escherichia Enterbacter Klebsiella Serratia mnemonic: frEKlS Not lactose Fermenters (yellow) Proteus Pseudomonas Yersinia Shigella Salmonella mnemonic: PYSS ______________________________________ by Michael T. Milano, MD PhD MTMilano@yahoo.com www.geocities.com/MTMilano/palm/