Figure 4.

The hydroperoxide assay results for the various exposures and controls. The EWNS-exposed bacteria appear to have significantly more peroxidation as compared to the bacteria that were exposed to room air. When vitamin-C (ROS scavenger) is added, the lipid peroxidation is reduced to levels comparable to the control (room-air exposed bacteria). The ozone control experiment showed that the ozone levels are not enough to induce any peroxidation. The symbols *, ** denote statistical significant values (P-value < 0.005).