Keywords: AD; atopic dermatitis; DCFH-DA; dichlorodihydrofluorescin diacetate; DMEM; Dulbecco's Modification of Eagle's Medium; DNPH; dinitrophenylhydrazine; FACS; flow cytometry; GSTP1; glutathione-S-transferase P1; IHC; immunohistochemistry; IL-4; interleukin-4;