Fig. 2
Phylogenetic tree constructed from the 9 loci-concatenated sequences of STs 1 to 27 of B. quintana strains. The tree was constructed from the concatenated sequences (4271 bp) of the 9 loci used for MLST analysis by using the maximum-likelihood method based on the Tamura 3-parameter model in MEGA X [22]. The B. quintana strains from humans (STs 1 to 7 and STs 23 to 27), cynomolgus macaques (STs 8 to 14), rhesus macaques (STs 15 to 21), and Japanese macaques (ST22) were included in the tree. Colored rectangles show 4 groups classified by host species. The scale bar indicates estimated evolutionary distance. Bootstrap values were obtained with 1000 replicates. Only bootstrap replicates > 50% are noted. B. henselae Houston-1T was set as an outgroup in the tree