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www.fdanews.com/articles/149790-scientists-make-tiny-medical-devices-that-dissolve-in-mice

Scientists Make Tiny Medical Devices That Dissolve in Mice

September 28, 2012
As consumers we want our electronic gadgets to be durable. But as patients, we might want them to dissolve — inside our bodies. Scientists reported that they succeeded in creating tiny medical devices sealed in silk cocoons that did the work they were designed for, then dissolved in the bodies of lab mice.
CBS News