What could Stem Cell Research potentially cure? Could it cure brain damage?

I know it could potentially cure Alzheimer's, Parkinson's, and some blindness. What other possibilities does it have? Could it cure any or all stroke victims that have lasting brain damage? Would there be a time limit on how soon it would have to be treated and how far away is this if... show more I know it could potentially cure Alzheimer's, Parkinson's, and some blindness. What other possibilities does it have? Could it cure any or all stroke victims that have lasting brain damage? Would there be a time limit on how soon it would have to be treated and how far away is this if possible.....months/years/decades?
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