Table 2.

Substrate utilization of the red and white variants ofE. coli O157:H7 strains ATCC 43895 and ATCC 43894a

Strain variantPhenotypeArgininePyruvate
43894OW1White
43894OW2White
43894OW3White
43894FWAWhite
43894FWBWhite
43894FWCWhite
43895OWWhite
43895FWWhite
43894OR1Red+
43894OR2Red++
43894OR3Red+
43894FRARed++
43894FRBRed+
43894FRCRed+
43895ORRed+
43895FRRed+
  • a All 16 variants were identical in their utilization of the 30 other substrates measured by the Sensititre AP80 gram-negative autoidentification plate.