Intra- and inter-species comparison of the predicted gene content of the C. ulcerans genomes. (A), Selected examples of genomic regions comprising strain-specific genes in C. ulcerans. Orthologous gene regions are shaded gray. (B), Venn diagram comparing the gene content of C. ulcerans 809, C. diphtheriae NCTC 13129 and C. pseudotuberculosis FRC41. The Venn diagram shows the number of shared and species-specific genes among the three corynebacterial genomes.