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GIC7 (top) and PG88 (bottom) cell viability under different conditions of photodynamic therapy. The plot is representative of three independent experiments performed in both adherent cells in quadruplicate. Irradiation was applied at 1.2–4.8 J/cm2. The percentage of cell viability after 5-ALA treatment (0–100 µg/mL) was calculated with regard to control cells without treatment.
