Scientists have long hoped that stem cells might have the power to treat diseases. But it's always been clear that they could be dangerous too, especially if they're not used carefully.
Now a pair of papers published Wednesday in the New England Journal of Medicine is underscoring both the promise and the peril of using stem cells for therapy....
http://www.npr.org/sections/health-shots/2017/03/15/520118310/3-women-blinded-by-unproven-stem-cell-treatments?ft=nprml&f=1001
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