Figure 1. Phylogenetic tree of Bartonella species based on the combined gltA, rpoB, ftsZ, and intergenic transcribed spacer sequence alignment. The tree shown is a neighbor-joining tree based on the Kimura two-parameter model of nucleotide substitution. Bootstrap values are based on 1,000 replicates. The analysis provided tree topology only; the lengths of the vertical and horizontal lines are not significant.