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Phylogenetic analysis based on the hsp65 (A) and rpoB (B) genes of isolate 1 (boldface) and other rapidly growing mycobacteria. The numbers at the nodes are the percentages of bootstrap levels supported by 1,000 resampled data sets. Bootstrap values of <50% are not shown. Nocardia fluminea (A) and M. leprae (B) were used as outgroups.
