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Effect of administration groups on reactive oxygen species. (A) Representative fluorescence images of HaCaT cells with different compounds addition; (B) Fluorescence intensity of ROS level among FA and VA addition groups of HaCaT cell (Control: normal group; Model: UVB radiation group; VA-FA: mixture of VA (120 μM) and FA (100 nM); VA: only retionol (120 μM); FA: only ferulic acid (100nM)).
