Abstract
The effects of CTAB uptake on cells of E. coli have been examined in terms of growth inhibition and decrease in cell viability. Different thresholds of CTAB uptake exist below which no effect on cell growth or viability could be detected and there was a distinct separation of the two effects. It is suggested that both reflect all or none responses by individual cells. A mechanism for the mode of antibacterial action of CTAB against E. coli is postulated.