Figure 3
From: Prevalence of Rickettsiales in ticks removed from the skin of outdoor workers in North Carolina
Neighbor-joining tree showing phylogenetic relationship of partial 23S-5S IGS sequences of known Rickettsia and species identified after cloning of tick genomic DNA samples that were initially classified as unknown and/or were identified as co-infected samples in RLB hybridization assays. Sequence homologies <99% are indicated in parentheses after the sequence identity. The scale bar indicates an estimated change of 5% 23S-5S IGS. Sequences beginning with “FT” or “2FT” were generated in this study. Bootstrap values below 50% are not shown in the tree branch. Accessions numbers for study samples are given in parentheses. *Unpublished GenBank sequences.