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[VOA慢速] VOA慢速精精听2019-02-04

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The tubes are then sent to the Owlstone's laboratory. There researchers examined the volatile organic compounds in the breath. Theses VOCs, as they are known, are produced by the body's chemical processes. However, changes in chemical activity can produce particular markings. And those markings can be bio-markers, providing evidence of disease. Some bio-markers may show evidence of cancer in its earliest stage. Cancer develops in stages. The earlier cancer is identified, the greater the chance of survival. One of the Owlstone's founders is ***. He says cancer often appears, or as he says, presents itself after it has spread.
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