Fig 4. MICs against various drugs as indicated for the different strains.

The bacterial cultures were grown till 0.6 OD₆₀₀ and diluted 1000 fold. Aliquots (50 μl) of the diluted culture was added to the serial dilutions of antibiotics (in duplicate rows) and incubated under mild shaking conditions at 37°C for 40 h, after which resazurin was added to each well. The color changes were observed and imaged 6 h after addition of resazurin.