Brain Regeneration: Transplanting Patients' Own Cells

Stroke is the world's second-leading cause of death. Survivors may suffer brain damage that causes severe impairments in motor, language or other abilities. Japanese doctors have spent years developing a treatment that regenerates the brain using the patient's own cells. Clinical trials are underway. A participant who had complete paralysis on one side of her body can now walk. The treatment takes stem cells from the patient's bone marrow and injects it directly into the brain.