London: Scientists claim to have developed a tiny under-the-skin implant which can predict a heart attack in advance by several hours. The device, developed by Swiss scientists, is just 1.4cm long, and can check up to five different substances in the blood around the clock - and transmit the results to a doctor`s computer. The inventors said the tiny "lab-on-a-chip" could be used to give an early warning of a heart attack, or monitor cancer patients having chemotherapy. Giovanni de Micheli of the Ecole Polytechnique Federale de Lausanne said the chip can be "programmed" by coating it with chemicals which react with substances that doctors want to monitor.
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