Figure 2.

The percentage of S. aureus colonies grown on the infected surfaces of glass slides modified with PVP that was N-alkylated with different linear alkyl bromides relative to the number of colonies grown on a commercial NH₂-glass slide (used as a standard). The bacterial cells were sprayed from an aqueous suspension (10⁶ cells per ml) onto the surfaces. All experiments were performed at least in quadruplicate, and the error bars indicate the standard deviations from the mean values obtained.