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Cancer-detecting tests show promise
Company: Blood work exam proves effective predictor
In this 2015 file photo, a patient has blood drawn at a hospital in Philadelphia to monitor her cancer treatment. Companies are trying to develop blood tests that can look for signs of many types of cancer at once. - photo by Associated Press
A California company says its experimental blood test was able to detect many types of cancer at an early stage and gave very few false alarms in a study that included people with and without the disease.
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