Fig. 5

Quantitative determination of biofilm formation. WT S4074, ΔqseBC, ΔapfA, ΔapfB, ΔapfC and ΔapfD strains were grown in BHI at 37 °C. OD590 of the bacterial biofilm were measured after 72 h of incubation. Data are shown as mean ± SD (N = 3). *P < 0.05