Spectrum-based dendrogram representing Burkholderia mallei, Burkholderia pseudomallei, and other relevant bacteria. The dendrogram was constructed based on the MALDI Biotyper scores. Note that distances between B. mallei and B. pseudomallei isolates are small compared to the distances of other B. species. B. mallei/B. pseudomallei and B. thailandensis separate as distinct group from the other species of the B. genus.