SMOX and cystic fibrosis: The main reference strain for genetic and functional studies of P. aeruginosa, PAO1 (ACCESSION: NC_002516), the “Liverpool endemic strain” P. aeruginosa LESB58 (NC_011770), which was found to be highly transmissible in cystic fibrosis patients, the ExoU-positive strain PA14 (NC_008463), the Argentine clinical isolate PA7 (NC_009656), which was reported to have an unusual antibiotic resistance pattern, were selected as reference strains with different characteristics for clustering analysis with the isolates (Fig. 5) [30].