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Plate counting of viable E. coli and S. aureus on the surface of patches with NO turned on for 6, 24, and 48 h (n = 3 for each strain. *p < 0.01; S. aureus: n = 3, **p < 0.05). Patch control is a plain patch without inner filling solution. Patch/nitrite control is the patch with inner nitrite solution. Patch NO is the patch where NO release is turned “on”.
