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"U.S. scientists say a nanoparticle they developed could deliver a drug directly to a cancer cell's nucleus making treatment more effective."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.upi.com/Health_News/2012/04/09/Nanoparticle-helps-deliver-drug-to-cancer/UPI-41461334027883/>