Fig. 5

Biofilm formation was analyzed by Crystal violet binding assay in a P. aeruginosa or b S. aureus cells. The production of bacterial biomass was evaluated after exposure with the indicated concentrations of ZNGs and expressed as biofilm formation relative to untreated cells (UT). Asterisks indicate statistical significance (ns not significant; *p < 0.05 and ***p < 0.001 with respect to UT)