Fig. 5. Bivariate scatterplots for redox state, as indicated by the native fluorescence of NAD(P)H, and peroxide, as indicated by H2DCFDA-derived 2',7'-dichlorofluorescein. Each point represents the relative luminance of NAD(P)H and peroxide for a single epitheliomuscular cell fiber (circles, from colonies 3–5h after feeding; open squares, from colonies 24h after feeding).