Figure 3From: Photon activated therapy (PAT) using monochromatic Synchrotron x-rays and iron oxide nanoparticles in a mouse tumor model: feasibility study of PAT for the treatment of superficial malignancyDark cytotoxicity results of magnetite nanoparticles by MTT assay. Cellular uptake of FeO NP showed no cytotoxic effects, and the cells remained more than 97% viable relative to the control at FeO NP concentrations as high as 2.0 mg/ml.Back to article page