FIG 3.

Fibronectin binding protein gene expression in serum. Analysis of fnbA (A) and fnbB (B) expression in S. aureus LAC WT and isogenic ΔsaeS and SaeS^L18P mutant biofilms developed in RPMI with/without 10% or 50% FBS or 50% HS after 5 h. Data are from at least two independent experiments and presented as mean fold changes from LAC in RPMI ± SDs. Statistical analysis was performed using a two-way ANOVA with Tukey’s post hoc multiple-comparison test. *, P < 0.05; **, P < 0.01; ns, no statistically significant difference across the groups.