Table 1. Bacterial strains used in this study.

Strain
Pseudomonas aeruginosa	ATCC 15692, PAO1
Pseudomonas aeruginosa	PA14
Pseudomonas aeruginosa	PA14ΔlasI [31]
Pseudomonas fluorescens	Clinical isolate
Pseudomonas putida	S12
Pseudomonas stutzeri	DSMZ 10701, JM300
Staphylococcus aureus	ATCC 43300
Staphylococcus simulans	ATCC 27851
Staphylococcus capitis subsp. capitis	ATCC 35661
Staphylococcus epidermidis	Clinical isolate
Streptococcus pneumoniae	ATCC 49619
Streptococcus equi subsp. zooepidemicus	ATCC 43079
Klebsiella pneumoniae	ATCC 43816
Haemophilus influenzae	ATCC 49247