Evidence of Existence?

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Cancer researchers have theorized that a small population of cells, dubbed cancer stem cells, drives tumor growth. Recent studies have made the theory more plausible, and now, says Nature News' Monya Baker, three new studies track what may be cancer stem cells forming tumors in the brain, the skin, and the gut. "Their results support the ideas that a small subset of cells drives tumor growth and that curing cancer may require those cells to be eliminated," Baker adds.

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