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Going for the Gold

Graduate student Geoffrey von Maltzahn has been using gold nanoparticles to develop new methods to fight cancer. One takes advantage of the porous blood vessels that tumors put out to get gold rod-shaped nanoparticles into tumors. Once there, von Maltzahn shines a near-infrared laser on the patient's skin, above the tumor, to heat up the gold and destroy the malignant tissue.

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