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SEM of oligodendrocyte cell eaten in MS

SEM of oligodendrocyte cell eaten in MS

M210/0104

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Credit

DR JOHN ZAJICEK / SCIENCE PHOTO LIBRARY DR JOHN ZAJICEK / SCIENCE PHOTO LIBRARY

Caption

Multiple sclerosis. Coloured Scanning Electron Micrograph (SEM) of microglial cells (yellow) ingesting branched oligodendrocyte cells (purple). This is the process thought to occur in multiple sclerosis (MS). Oligodendrocytes form insulating myelin sheaths around nerve axons in the central nervous system. Microglia normally ingest cell debris and bacteria as part of the body's immune response. In MS they attack oligodendrocytes, possibly triggered by a virus in people with hereditary susceptibility. Destruction of myelin sheaths leads to loss of nerve function. Symptoms include unsteady gait, visual & speech defects and paralysis. Magnification: x875 at 5x7cm size.

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