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Could Star Trek medical device become a reality?

The Tricorder was made famous in the science fiction TV series Star Trek - a device that could be held over the body to give an instant diagnosis of illness or any ailment you might be suffering from.

But now it seems Star Trek medicine could closer than we thought. Two teams are competing to win the $10m (拢8m) X-Prize to develop such a device. Clinical trials have already begun.

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