Fig 4. PMZ increases the membrane potential of P. aeruginosa.

Exponentially growing cells of PA14 (left) and PAO1 (right) were challenged with increasing concentrations of PMZ. Cells were stained with the membrane potential indicator DiOC₂(3) and analyzed by flow cytometry. The red/green fluorescence ratio was calculated using population mean intensities. Experiments were carried out in triplicates. Data analysis by Student’s t-test demonstrates significant difference (* p < 0.05) between the treated samples and the control.