FIG. 3.

A-NO₂⁻-mediated killing of S aureus USA300 under anaerobic conditions. NaNO₂ concentrations tested were 0 μg ml⁻¹ (closed circles), 512 μg ml⁻¹ (open circles), 1,024 μg ml⁻¹ (squares), and 2,048 μg ml⁻¹ (triangles). The graphs represent the averages of three independent cultures analyzed concurrently.