Expansion of mutant stem cell populations in the human colon.

Abstract excerpt

In general, it is presumed that colonic epithelial stem cells are the principal cell type at risk of incurring the series of somatic mutations leading to carcinoma, since all other epithelial cell types are short-lived. Mutant stem cell clonal expansion increases the risk for subsequent mutations and is therefore a potentially important step in carcinogenesis. The stem cells reside in colonic crypts, simple...

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