FIG. 2.

A-NO₂⁻-mediated killing of P. aeruginosa PAO1 under anaerobic conditions. NaNO₂ concentrations tested were 0 μg ml⁻¹ (closed circles), 256 μg ml⁻¹ (open circles), 512 μg ml⁻¹ (squares), 1,024 μg ml⁻¹ (triangles), 2,048 μg ml⁻¹ (diamonds), and 4,096 μg ml⁻¹ (stars). The graphs display the averages and standard deviations of three independent cultures analyzed concurrently.