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A strong association between iron metabolism and light injury resulting from 3d of blue LED light exposure (A); CP (B), Ft (C); and Fpn (D) were up-regulated, but Tf (E) and the TrfR (F) were down-regulated as the wavelength decreased; n=8 for the control group and each exposure group. aP<0.05, bP<0.01, cP<0.001 compared with the control group.
