Figure 5.

Cytokine levels in the culture supernatant of ARPE-19 cells incubated for 24 h in the dark or under blue, green, red or whole light irradiation. Five groups consisted of the dark culture and four light-irradiated cultures, and four groups were composed of four light-irradiated cultures. Cytokine levels among (A) 5 groups and (G) 4 groups were compared by non-repeated measures ANOVA. (B–F) Dunnett’s test was used for multiple comparisons of cytokine levels between each light-irradiated culture and dark culture as control. (H,I) p values in all pairwise comparisons of IL-17A and bFGF levels among light-irradiated cultures at indicated light wavelengths were obtained by the Tukey–Kramer test. n = 4 in each group. *: p < 0.05, **: p < 0.01.