Fig 6. Maximum-likelihood phylogenetic trees of (a) 16S rRNA sequences of Anaplasmataceae and of gltA (b) genes of Rickettsia spp. Bootstrap values (>40%) are shown near the nodes.

Rickettsia parkeri (a) Rickettsia belli, Rickettsia canadensis (b) were used as outgroups. Scale bar indicates nucleotide substitution per site. Sequences of this study are in bold.