Figure 2

Effect of the 59 non-aureus Staphylococcus (NAS) on biofilm formation (A) and dispersion (B) of S. aureus (CFU/mL of the biofilm and dispersed fraction, respectively) taking into account the capacity of NAS to regulate the agr system of S. aureus [19]. For both assays, S. aureus 8325-4 [S. a. (agr +)] and 8325-4 Δagr [S. a. (agr-)] biofilms (A) or pre-established biofilms (B) were co-cultured together with NAS isolates that are able to repress the agr system of S. aureus (RP) or not (NRP) and compared to biofilm formed by S. aureus alone (black bars).