Northwestern University School of Medicine Researchers Christopher Bissonnette and Jack Kessler converted stem cells (general cells in the bone marrow) into brain cells that can be used to replace damaged neurons.

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Its goal is to create pills that unlock the potential of stem cells already situated inside the brain, skin, and bone marrow.

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In fact, other researchers have already managed to persuade adult bone marrow stem cells to develop into brain neurons.

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Doctors worried that leukemic cells might have infiltrated her brain, a development that would have left her with only one option, a bone marrow transplant.

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