Figure 5.

Viable cell counts of Bacillus subtilis during incubation in PBS. Cells were grown in NB medium for 5.5 h, harvested by centrifugation and then suspended in PBS buffer and incubated at 30°C (red line) or at 5°C (blue line). At indicated points of time viable cell counts [cfu ml⁻¹] were determined. Error bars indicate standard deviation.