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Dendrogram depicting the strain similarities for the 202 strains of E. coli. The NJ tree was obtained from a Nei’s distance matrix derived from the multilocus electrophoresis data using the PHYLIP 3.5 program. For each strain, the name of the host along with the strain reference number is printed. Australian strains are in bold, bird strains are in italics, and ECOR strains are underlined.
