
Keywords: DF, Dermal fibroblasts; DMEM, Dulbecco–Vogt modified Eagle׳s medium; EDTA, Ethylenediaminetetraacetic acid; EGF, Epidermal growth factor; K, Keratinocytes; K10, Keratin 10; NCS, Newborn calf serum; P, Passage; SEM, Standard error of the mean; TRITC, Tetra