Study resolves long-disputed theory about stem cell populations

Adult stem cells represent a sort of blank clay from which a myriad of different cell and tissue types are molded and as such are of critical importance to health, aging and disease. In tissues that turn over rapidly, such as the intestines, the self-renewing nature of stem cells and their susceptibility to cancer-causing mutations has led researchers to postulate that these cells also act as the cell of origin in cancers. The rarity of adult stem cells relative to their differentiated daughter