Bile and Osmotic challenge assays.

<p>A) Stress sensitivity of the WT wild-type strain, the <i>kpnO</i> mutant. The percentage of resistance to bile (0.2%, 0.5%, 0.75%, 1.0%, and 2.0%) was calculated by comparison to the numbers of viable cells in LB medium alone. B) The percentage of resistance to different concentration of NaCl stress (0.075 M, 0.15 M, 0.25 M, 0.5 M, 0.75 M, 1.0 M and 2.0 M) for WT and Δ<i>kpnO</i> was calculated by comparison to the numbers of viable cells in control.