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IBM Says New Chip Can Filter Blood For Signs Of Cancer

Particles that might hold markers for cancer pass through a silicon obstacle course that sorts them by size.

Cancer starts small—at the nanometer scale, as DNA, RNA, and proteins develop harmful defects. So cancer detection has been moving down in size—toward “liquid biopsies” that filter blood and other bodily fluids to detect problems in cells or pieces of cells before tumors emerge.

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