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Distribution of YE0904 among Y. enterocolitica strains. A parsimony-based gene analysis for determining the distribution of individual CDS YE0904 throughout the phylogenetic tree is shown. Strains from which YE0904 is absent are yellow, and strains in which YE0904 is present are blue. Strains in the nonpathogenic clade and the high-pathogenicity clade all contain YE0904. YE0904 is absent from strains in the low-pathogenicity clade.
