Figure 3.

Intracellular survival rates of C. jejuni cells within A. castellanii . Intracellular survival rates were determined by colony forming unit (CFU) counting at 0, 5, and 24 h post gentamicin treatment at 25°C in aerobic conditions. Panel A: comparison of wild-type (WT) and htrA mutant. Panel B: comparison of stressed and non-stressed wild-type bacteria. Data are means and standard errors of three independent experiments. Statistically significant differences concern comparisons between control and treatment groups. (*) p < 0.05; (**) p < 0.01; nd, none detected.