Fig. 12From: The application of titanium dioxide, zinc oxide, fullerene, and graphene nanoparticles in photodynamic therapy[Taken from reference (Lu et al. 2015)] a Dark toxicity of TiO2 and modified TiO2 NPs on HL60 cells at different concentrations. b Viability of HL60 cells treated with TiO2 and modified TiO2 NPs upon irradiation (1 h, 403 nm, 5 mW/cm2, 18 J/cm2)Back to article page