New glass stamp may make cheaper, more precise biosensors

Advances in microchip technology may someday enable clinicians to perform tests for hundreds of diseases -- sifting out specific molecules, such as early stage cancer cells -- from just one drop of blood. But fabricating such "lab-on-a-chip" designs -- tiny, integrated diagonistic sensor arrays on surfaces as small as a square centimeter -- is a technically challenging, time-consuming and expensive feat.

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