Fig. 2From: Antimicrobial activities of graphene oxide against biofilm and intracellular Staphylococcus aureus isolated from bovine mastitisAntimicrobial activity of GO against extracellular S. aureus F31D (a); S. aureus F41B (b) and S. aureus F53D (c) at different concentrations and time of exposure. Error bars represent standard deviation of triplicates. *p ≤ 0.05; *** p ≤ 0.001; **** p ≤ 0.000; and NS, not significantBack to article page