FIG. 2.

Dendrogram based on MLEE analysis of 145 P. aeruginosa strains. Presence of the genes lasA, lasB, aprA, exoS, exoT, exoU, and ctx and presence and activity of the proteases staphylolysin (LasA), elastase, and alkaline protease are indicated for each ET. Numbers in brackets indicate the number of strains differing from the majority characteristics. Numbers divided by an oblique stroke (/) indicate the number of strains positive or negative for the respective genes. Only abberations from majority characteristics of the ET are shown. N, number of isolates in the ET; m/a, electrophoretic mobility of LasA in SDS-PAGE activity of LasA; s/a, size of elastase in SDS-PAGE activity of elastase; N.d, not detectable. Only bootstrap values exceeding 50% are shown in the dendrogram.