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Minimum-spanning tree of 139 M. abscessus complex isolates based on the three-gene and seven-gene MLST schemes. Strains clustered together by the three-gene scheme was depicted as circles, segments within the circles depict more than one isolate clustered together by the seven-gene schemes. Different colors within one circle represent different sequence types determined by the seven-gene MLST that were indistinguishable by the three-gene MLST.
