Researchers of the University of California at San Diego (UCSD), the Sanford-Burnham Medical Research Institute, and MIT have developed a new drug delivery system which can release a first batch of nanoparticles that selectively attaches on the tumor, and then emits a second batch of nanoparticles that gives out the cancer drug. In a mouse study, the link between nanoparticles improved drug delivery to tumors by almost 40-times. Researchers claim that this new technique could improve effectiveness of drugs to cure cancer and other diseases. The details of the research are published in the Nature Materials journal.