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Stem cells raise hopes, but is there money in them?

Madison, Wis. ââ?¬â? One of the more hopeful promises of stem cells is the creation of new organs, grown to meet the medical demand that is not being met by organ donation. But experts expressed concerns at last week’s Stem Cell Symposium that high hopes could lead to backlash: among patients if cures do not materialize, and among investors if nobody can make money on them.