Group Listing Aerobes: GNC Aerobes: GNR - Enterobacteriaceae Citrobacter freundii Citrobacter koseri Edwardsiella tarda Enterobacter aerogenes Colonial morphology BA MAC Enterobacter cloacae Enterobacter sakazakii Enterobacteriaceae - Gram stains Escherichia coli Escherichia coli O157:H7 Hafnia alvei Klebsiella oxytoca Klebsiella pneumoniae Morganella morganii Proteus mirabilis Proteus vulgaris Providencia alcalifaciens Providencia rettgeri Providencia stuartii Salmonella species Serratia marcescens Shigella species Yersinia enterocolitica Aerobes: GNR - Haemophilus, HACEK and others Aerobes: GNR - Nonfermenters Aerobes: GPC Aerobes: GPR Anaerobes: GNC Anaerobes: GNR Anaerobes: GPC Anaerobes: GPR Anaerobes: GPR, Spore-forming Mycobacteria