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Seeing disease's acidic side

Method may allow early detection of tumors by pH

Thanks to a new technique that enables scientists to detect a slight change in acidity, hard-to-find, small tumors may one day be caught earlier. By visualizing pH, the method can map out diseased tissue in mice, a team reported online and in the June 12 Nature.

Researchers say the noninvasive, nontoxic and precise technique has potential to provide an early warning system for cancer and other diseases in people.

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