FIG 3.

Antibacterial effect of GML (A to C) and lauric acid (D to F) on the viability of S. aureus biofilms cultivated with or without streptomycin (A, D), ampicillin (B, E), or vancomycin (C, F), showing a synergistic effect (*, P ≤ 0.01 for comparison to the corresponding concentration of GML or lauric acid alone) of streptomycin with GML (A) or lauric acid (D) but no synergistic effect with ampicillin (B, E) or vancomycin (C, F). Each data point represents four to six biofilms. The lower detection limit was 1.7 log₁₀ CFU per biofilm.