FIG. 1.

Phylogenetic tree of mycobacteria, including one representative strain for each species. Multiple sequence alignments were determined using the CLUSTAL method algorithm in the Megalign component of the Lasergene program (version 4.01). (A) Phylogenetic tree inferring relationships among rapid growers of the Mycobacterium genus. (B) Phylogenetic tree inferring relationships among slow growers of the Mycobacterium genus. The tree was rooted using Nocardia asteroides as the outgroup sequence. Sequences were determined in our laboratory unless indicated by a GenBank accession number.