Figure 4.

(A) Effects on ATR phototoxicity of different concentrations of zeaxanthin in liposomes to ARPE-19 cells supplemented with zeaxanthin and without zeaxanthin. (B) Effects on phototoxicity of different combinations of zeaxanthin and α-tocopherol (TOH) in liposomes to ARPE-19 cells not supplemented with antioxidants. (C) Effects on phototoxicity of different combinations of zeaxanthin and α-tocopherol in liposomes to ARPE-19 cells supplemented with zeaxanthin. The symbols represent the viability of cells in independent experiments, the crosses represent the means, while the error bars show SDs (the individual data points from experiments with no antioxidants in liposomes are shown only in Figure 3; N for each experiment with antioxidants in liposomes was 8). Other experimental conditions as in Figure 3.