DR W. CRUM, DEMENTIA RESEARCH GROUP, TIM BEDDOW / SCIENCE PHOTO LIBRARY DR W. CRUM, DEMENTIA RESEARCH GROUP, TIM BEDDOW / SCIENCE PHOTO LIBRARY
Multiple sclerosis. Coloured magnetic resonance imaging (MRI) scan of a coronal (vertical) section through a brain in multiple sclerosis (MS). In MS there is destruction of the myelin sheaths around the axon nerve fibres of the brain and spinal cord. This produces demyelinated lesions (yellow ovals in orange area, upper centre) and abnormally enlarged fluid-filled ventricles (blue, centre) in the brain (orange/yellow). Axons in the affected area can no longer conduct nerve impulses, resulting in symptoms ranging from tingling to paralysis. MS is believed to be an autoimmune disorder in which the immune system attacks myelin.
Model release not required. Property release not required.