Medicine: Cancer Blue

Cancer is a wildfire growth of rebel cells. Why and how normal cells suddenly go haywire and pile up into malignant tumors is the crucial research problem in cancer today. Last week, at the American Association for the Advancement of Science meeting in Milwaukee, Dr. Herbert Eugene Schmitz and James Ernest Davis of Chicago's Mercy Hospital prodded the dark cancer whirlpool with one more little ray of light.

For a long time, they said, researchers have known that cancer cells consume an abnormally small amount of oxygen. To find out why, Drs. Davis and Schmitz probed an enormous rat tumor, discovered...

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