Fig. 5From: Antimicrobial activities of graphene oxide against biofilm and intracellular Staphylococcus aureus isolated from bovine mastitisAntimicrobial activity of GO against intracellular S. aureus strains a) F31D, b) F41B, and c) F53D. Untreated infected cells were used as a control to establish CFU value corresponding to 100% survival. Error bars represent standard deviation of triplicates. *p ≤ 0.05; *** p ≤ 0.001; **** p ≤ 0.000; and NS, not significantBack to article page