SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY
Brain in multiple sclerosis, coloured magnetic resonance imaging (MRI) scan. Multiple sclerosis (MS) is a condition in which nerves lose their protective myelin sheath. Areas of demyelination are seen here as the irregular rounded black patches. Loss of myelin impairs the ability of nerves to conduct signals, leading to symptoms ranging from tingling to clumsiness, paralysis and cognitive impairment. The cause of MS is not well understood, although it is thought to be an autoimmune disorder, in which the body's immune system attacks its own myelin. There is no cure, although physiotherapy and drugs can slow its effects.
Model release not required. Property release not required.