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The Tiniest Test Kits: A Medical Future for Carbon Nanotubes?

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Illustration shows how a tiny needle full of carbon nanotubes could work as glucose sensor.

Tiny, implantable devices filled with carbon nanotubes may someday help diabetics monitor glucose levels without drawing blood. Researchers hope that nanotubes--thanks to their strength, conductivity and light-emitting properties--will lend themselves to a range of similar "biosensing" applications.

Credit: Michael Strano, University of Illinois at Urbana-Champaign

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