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Regenerating nerve cell, TEM
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Regenerating nerve cell, TEM
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 cells 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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Media ID 6421856
© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY
Axon Fibres Injured Injury Myelin Sheath Myelinated Nerve Nerve Fibre Nervous Nucleus Peripheral Nervous System Regenerating Regeneration Schwann Cell System Transmission Electron Micrograph Transmission Electron Microscope False Coloured Neurological Neurology
EDITORS COMMENTS
This print showcases the intricate process of nerve cell regeneration. In this false-colored transmission electron micrograph (TEM), we witness a remarkable sight - a regenerating nerve cell within a Schwann cell. The blue nerve axon is seen growing and reforming, while being cradled by the light brown Schwann cell. Surrounding them both is the pink basement membrane, providing support and structure. The green nucleus of the Schwann cell stands out amidst this vibrant scene, symbolizing its vital role in orchestrating this regenerative dance. The myelin sheath, depicted in dark brown hues, envelops the axon like a protective shield. This fatty insulating layer not only safeguards but also accelerates the speed at which nerve impulses travel through these fibers. It's important to note that such regenerative abilities are exclusive to cells of the peripheral nervous system; those belonging to our central nervous system lack this capability. This awe-inspiring image serves as a testament to nature's resilience and offers hope for advancements in medicine and neurology. As we delve into this microscopic world of biology and anatomy, we gain deeper insights into how our own bodies function on an intricate level. Science Photo Library has once again captured an extraordinary moment that invites us to appreciate both the complexity and beauty found within our own human body.
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