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Phylogenetic relationship of various Ehrlichia spp. based on the nucleotide sequences of citrate synthase gene (A) and 16S rRNA gene (B). The neighbor-joining method was used to construct the phylogenetic tree by using the ClustalW program. The scale bar represents 1% divergence. The numbers at nodes are the proportions of 1,000 bootstrap resamplings that support the topology shown.
