DL results for P. aeruginosa isolates from CF patients in relation to the STs. The circles indicate different STs (indicated by numbers). The size of each circle reflects the number of isolates. The different types discerned by DL are indicated as follows: light blue, cluster type 001; yellow, cluster type 002; brown, cluster type 003; dark blue, cluster type 004; purple, cluster type 005; pink, cluster type 006; green, closely related cluster types 025 and 026; red, cluster type 033; white, all other cluster types.