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Bacteria killing on plasma passivated surfaces, with live-dead staining and corresponding viability percentages for A-B) a Gram-positive bacterial species (S. aureus) and C-D) a Gram-negative bacterial species (P. aeruginosa). Dead bacteria appear in red, while live bacteria appear green. Scale bar represents 30 μm. Graphs show n = 4, mean ± SEM. One-way ANOVA with Tukey's multiple comparison tests (∗∗∗∗p < 0.0001).
