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Phylogenetic analysis of the nontuberculous mycobacteria (NTM) isolates used in this study. A phylogeny based on the multiple sequence alignment of partial rpoB sequences inferred between isolate relationships and delineated as rapid- (RGM) and slow-growing NTM (SGM) isolates was obtained using the neighbor-joining method and observed SNPs. The scale bar represents an 11-SNP difference in nucleotide sequences. M. = Mycobacterium.
