See Inside Scientific American Volume 308, Issue 4

Neural Stem Cell Transplants May One Day Help Parkinson's Patients, Others

Neurodegenerative disorders devastate the brain, but doctors hope one day to replace lost cells
brain, brain cells, neurodegnerative disorders, brain growth

Bryan Christie

Future of Medicine: Advances in Regenerative Medicine Teach Body How to Rebuild Damaged Muscles, Tissues and Organs

Inside the human brain, branching neurons grow beside, around and on top of one another like trees in a dense forest. Scientists used to think that any neurons that wilted and died from injury or disease were gone forever because the brain had no way to replace those cells. By the 1990s, however, most neuroscientists had accepted that the adult brain cultivates small gardens of stem cells that can turn into mature neurons.

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