Isolates GS CT NRT CUT GHT SHT CHT IT MR VP TSIT NMR2 - + + + - - - - - - - NMR3 + + - - + - - - - - AB&S NMR4 + + - - - - - - - - AB NMR5 + - - - + - - - - - AB&S NMR6 + + + - - - - - - - AB&S NMR7 + - + - - - - - - - AB&S NMR8 + + + - + - + - - - AB&S NMR9 + - - - - - - - - - AB&S NMR10 + - + - - - - - - - AB&S NMR11 - + - + - - - - - - - NMR12 - + - + - - - - - - AB NMR13 - + - + - - - - - - - NMR14 + - + - + - - - - - AB&S NMR15 + + + - + - - - - - AB&S NMR16 - + - + + - - - - - AB&S NMR17 - + + + + + - - - - AB&S NMR18 + - + - + - - - - - AB&S

Table 1: Number of colony forming units (CFU) of bacteria growing in different concentrations of chromate (K2Cr2O7).