FIG 3.

Response to H₂O₂ in Fe-limited (left panels) and Fe-replete (right panels) chemostats. Baseline measurements (T₀—black line) were taken prior to induced oxidative stress. Cells were incubated with 4 mM H₂O₂ to induce oxidative stress, where the cellular response was measured at 10 min (T₁₀—red line) and 30 min (T₃₀—blue line) after addition. Peak shifts to the right along the x axis indicate increased ROS detection and hence greater oxidative stress. Sample A had the highest ROS level at T₀, as indicated by the right shift along the x axis.