Fig. 48From: The application of titanium dioxide, zinc oxide, fullerene, and graphene nanoparticles in photodynamic therapy[Taken from reference (Wang et al. 2013)]In vitro cell viability assay in HeLa cells of UCNPs–NGO/ZnPc at different concentrations without irradiation (black) and after PDT (green), PTT (red), or combined PDT/PTT (blue) treatmentsBack to article page