Figure 2.
Pathogenicity of E. coli clinical isolates in liquid killing assay with C. elegans. The pathogenicity (relative OD592nm value in the liquid assay) of the fecal and UTI-associated isolates were plotted. The value for MG1655 as a model strain for fecal isolate was 1.17, and that for UTI89 as a model strain for UTI associated isolate was 1.75. The horizontal bars represented the mean values. The results were analyzed statically by the Mann-Whitney U test. (***, p < 0.01). The pathogenicity of UTI-associated isolates was significantly higher than that of fecal isolates.