FIG. 2.

Genomic index of 26 pathogenic E. coli strains. An average linkage hierarchical clustering of the E. coli strains was compiled in GeneSpring version 5.0 from CGI data with the Pearson coefficient correlation. CDS present (ln[red/green] = 1) are shown in blue, absent CDS (ln [red/green] ≥ 2) are shown in red, and CDS with ln(red/green) between 1.5 and 2.0 are shown in yellow. Strains of the O26 serotype are labeled in red; other strains in the EPEC cluster are labeled in green, O157 strains are labeled in blue, and O86 strains are labeled in orange. The scale for distance score (ds) is also shown.