Biofilm Formation by Methicillin-Resistant and Methicillin-Sensitive Staphylococcus aureus Strains from Hospitalized Patients in Poland

Figure 1

Biofilm-forming ability of the four most numerous groups of S. aureus strains isolated from blood (B), bronchoalveolar washings (BW), wound (W), and anus (AN). Values of absorbance at 492 nm (A₄₉₂) were compared by using Kruskal-Wallis test. In analysis, multiple comparisons of average ranks at P ≤ 0.05 were used. The designation with different letters indicates that biofilm biomass formed by different groups of strains differs significantly.