Mass spectra from isolates belonging to either <i>L. (V) braziliensis, L. (V) guyanensis ((V)</i> stands for <i>Viannia</i> subgenus), <i>L. (L) major, L. (L) infantum</i> ((L) stands for <i>Leishmania</i> subgenus).

<p>The two pairs of peaks discriminating the <i>Viannia</i> subgenus from the <i>Leishmania</i> subgenus are labeled in green and blue, respectively and indicated by vertical dotted lines. The 11120+/−(7) peak that identifies the <i>Viannia</i> subgenus is shown in insert squares at the right side of the figure to improve readability. Peaks differentiating species complexes are labeled with their corresponding molecular weights in colored squares. The software automatically provides the molecular weights for all peaks above signal background (grey labels). Peaks that identify species in each subgenus are shown in Black. A few peaks above background were not labeled on the figure to improve readability, the complete spectra are provided as supplementary <b><a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0002841#pntd.0002841.s001" target="_blank">figure S1</a></b>.</p

Cluster analysis of MALDI-TOF MS 184 spectra from 46 <i>Leishmania</i> isolates (A) with distances displayed in relative units [19], and algorithm for a computer-independent interpretation of MALDI-TOF MS (B) based on presence/absence of peaks as displayed on Table 1.

<p>Cluster analysis of MALDI-TOF MS 184 spectra from 46 <i>Leishmania</i> isolates (A) with distances displayed in relative units <a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0002841#pntd.0002841-MarinachPatrice2" target="_blank">[19]</a>, and algorithm for a computer-independent interpretation of MALDI-TOF MS (B) based on presence/absence of peaks as displayed on <a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0002841#pntd-0002841-t001" target="_blank">Table 1</a>.</p