Figure 4From: Extensive genomic diversity and selective conservation of virulence-determinants in enterohemorrhagic Escherichia colistrains of O157 and non-O157 serotypesConservation of 'Sakai-specific' singleton genes in each functional group. 'Sakai-specific' singleton genes were categorized according to the COG classification. In each functional category, the numbers of genes fully conserved, variably absent or present, and fully absent are shown for each serotype.Back to article page