The presumed allelic loci of XVR13 in the Chinese Xcc strains suggested by aCGH. (a) The genomic region XVR13 in strain 8004. (b) The allelic locus of XVR13 in strain ATCC33913 revealed by whole genome comparison. (c-h) The allelic loci of XVR13 in the Chinese Xcc strains revealed by aCGH: (c) strains CN01, CN03 and CN11; (d) strains CN10 and CN20; (e) strain CN09; (e) strain CN07; (g) strains CN02, CN04, CN05, CN06, CN08, CN12, CN15, CN16 and CN18; (h) strains CN14 and CN17. IS, insertion sequence.