Fig. 3

Expansion of the pan-genome compared with the core-genome for each functional category in Enterobacter species. All data in Clusters of Orthologous Groups (COG) was normalized by min-max normalization. The number of core genes in each functional category was normalized (grey circle). The magnification of the pan gene number compared with that of core gene in each functional category is shown by the red circle. The COG categories with no circles contains only pan genes