Map of genomic segments covering the virB (A) , trw (B) and BH14680 (C) gene clusters. The bottom line shows the genes in B. henselae Houston-1 genome. Green diamonds indicate genes in which potential intra-gene recombination events occurred, as detected by GENECONV. Genes with atypically high Ks-values (Ks > 0.05) in the comparison of Houston-1 with either IC11 or UGA10 strain are marked with a pale blue star. The frequency of SNPs in 200 nt windows is shown by lines over the genes, with one line and color for each strain: red, IC11; green, Houston-1; blue, UGA10. Genes in the bep and trw gene clusters located on contig ends were not analyzed and these are shadowed in grey.