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Effect of GA, TiO2 nanofibers and GA-TiO2 nanocomposite-induced apoptosis for HepG2 cells: (A) The apoptosis analysis of HepG2 cells; (a) HepG2 cells; (b) HepG2 cultured in TiO2 nanofibers with photodynamic therapy (PDT); (c) HepG2 cultured in 0.5 µg/mL GA; (d) HepG2 cultured in GA-TiO2 nanocomposites; and (e) HepG2 cultured in GA-TiO2 nanocomposites with PDT. (* compared with that of GA and GA-TiO2 without UV irradiation, p < 0.05).
