Wanted: Stem Cell Super Donors

Our bodies’ cells didn’t evolve to flourish in a petri dish. Even fast-growing skin cells stop dividing and turn thin and ragged after a few weeks outside the body. This natural obstacle limited the therapeutic potential of lab-grown cells – if you can’t grow the cells, you can’t use them to heal damaged tissue.

Then, a decade ago, Nobel Prize winner Shinya Yamanaka identified a cocktail of genes that, when added to mouse skin cells, transformed them into a new kind of cell that grew happ

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