Research Article

Characterization of Putative Virulence Factors of Pseudomonas aeruginosa Strain RBS Isolated from a Saltern, Tunisia: Effect of Metal Ion Cofactors on the Structure and the Activity of LasB

Figure 4

Influence of antibiotics on P. aeruginosa RBS biofilm formation. Tetracycline, kanamycin, chloramphenicol, streptomycin, and ampicillin were added at different concentrations to biofilm medium. Data are expressed as OD531 and normalized to OD600. Values are expressed as . , , , and vs. control with .