Nanoparticles deliver their cargo, then disappear

Medical researchers are looking at any number of new methods to get drugs to specific locations in the body. Some methods are efficient but less safe, while others are safe but often fail to deliver. Now a nontoxic nanoparticle developed by researchers at Penn State University is proving to be an all-around effective delivery system for both therapeutic drugs and the fluorescent dyes that can track their delivery...

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