FIG 3.

The NRG857ΔPI-6 and NRG857ΔarlA strains exhibit increased sensitivity to Paneth cell secretions. (A) Sensitivity of wild-type NRG857c strain and phoP, PI-6, arlA, arlB and arlC mutant strains to Paneth cell secretions. Values that are significantly different (P < 0.001) by one-way ANOVA are indicated by the bars and three asterisks. Values that are not significantly different (ns) from the value for the wild type are indicated. (B) In vitro competitive index to Paneth cell secretions. Data are the means plus standard errors from 3 separate experiments. Values that are significantly different by one-sample t test are indicated by asterisks as follows: *, P < 0.05; ***, P < 0.001.