CATHERINE POUEDRAS / EURELIOS / SCIENCE PHOTO LIBRARY CATHERINE POUEDRAS / EURELIOS / SCIENCE PHOTO LIBRARY
Brain graft surgery in Parkinson's disease. Neuro- surgeons operate on the brain of a patient with Parkinson's disease to implant foetal nerve cells. A frame on the patient's head allows elecrodes and implant needles to be aimed at sites in the brain. Parkinson's disease is caused by degeneration of dopamine-secreting nerve cells in the basal ganglia of the brain. The affected brain region is located using MRI (Magnetic Resonance Imaging). Dopamine-secreting brain cells are then extracted from human foetuses and implanted in the affected regions of the patient's brain. Implant surgery on younger patients has achieved some successes.
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