COMO-UNIQUE, CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY COMO-UNIQUE, CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Multiple sclerosis. Magnetic resonance imaging (MRI) scan of the brain of a patient suffering from multiple sclerosis (MS). The front of the brain is at top. Grey matter appears folded on the outside of the brain. White matter is dark grey on the inside of the brain. The white lesions in the white matter (centre) are due to the destruction of the myelin sheaths around the axons nerve fibres of the nerve cells. MS may affect different parts of the brain & spinal cord, a fact reflected in the range of symptoms, which include limb tremors, involuntary eye movements and speech defects. Viral infection is a suspected cause.
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