Fig. 3
From: Real-time monitoring of Pseudomonas aeruginosa biofilm formation on endotracheal tubes in vitro
Crystal violet staining of ETT biofilm. Mean +/− SEM of biofilm mass analysed by CV staining (OD570). ETT pieces cultured for 12, 24 and 48 h with BLI-Pseudomonas in the presence (grey columns) or absence (black columns) of gentamicin were assessed. Values of p < 0.05 (*), p < 0.001 (***) and p < 0.0001 (****) were considered significant