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. Author manuscript; available in PMC: 2013 May 6.
Published in final edited form as: Photochem Photobiol. 2012 Jun 1;88(6):1362–1372. doi: 10.1111/j.1751-1097.2012.01161.x

Figure 6.

Figure 6

Reductive capacity of ARPE-19 cells as a function of initial concentration of AtRal or degraded AtRal (dAtRal) measured by MTT assay 24 h after 60 min incubation with AtRal or degraded AtRal (dAtRal) in dark or during exposure to visible light (~12 mW cm−2) (a). Cells without AtRal/dAtRal were used as control (100% reductive capacity). Concentrations of AtRal/dAtRal responsible for inhibiting by 50% (EC50) of the reductive activity of ARPE-19 cells in dark and during exposure to visible light (b). EC50 ± SE were obtained from fitting experimental data to a four parameter logistic curve.