Fig. 2

Magnetic nanosensors loaded with a chemotherapeutic to be injected intravenously and directed with a magnet towards the tumor tissue. In this specific example, the particle bound chemotherapeutic drug is introduced in the blood stream to treat a liver tumor. Preferred deposition of the drug in the liver through application of a local magnet improves the concentration of drug in the target organ and is expected to reduce side effects as less of the toxic drug reaches other organs