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Phylogenetic analysis of A. bovis based on 16S rRNA gene partial sequences. A neighbor joining tree was constructed using the Kimura two-parameter model in Mega 4.0. An alignment of 16S rRNA sequences from position 60 to 610 of the sequence (based on strain ES1019, GenBank accession no. HQ913644) was used to construct this tree. Rickettsia rickettsii is used as an outgroup. ●: sequences in this study.
