Regenerating nerve cell, TEM

Regenerating nerve cell, TEM

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Credit: STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

Caption: Regenerating nerve cell. Coloured transmission electron micrograph (TEM) of a section through a nerve axon (blue) regenerating within a Schwann cell (light brown). The Schwann cell is within the basement membrane (pink) of an old Schwann cell. The Schwann cell's nucleus is green. An axon is a nerve fibre that passes information between nerve cells. The axon is surrounded by a myelin sheath (dark brown), a fatty insulating layer formed by the Schwann cells, which increases the speed at which nerve impulses are carried. Only cells of the peripheral nervous system, and not the central nervous system (CNS), are surrounded by Schwann cells and are able to regenerate after injury.

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Keywords: anatomy, axon, basememt membrane, biological, biology, cell, coloured, false-coloured, fibres, human body, injured, injury, medical, medicine, myelin sheath, myelinated, nerve, nerve fibre, nervous, neurological, neurology, nucleus, peripheral nervous system, regenerating, regeneration, schwann cell, system, tem, transmission electron micrograph, transmission electron microscope

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