Movies shed new light on how nerves are wrapped

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An image of the spinal cord of a living zebrafish embryo showing oligodendrocyte progenitor cells glowing with red and green fluorescent proteins. Credit: Appel Lab
An image of the spinal cord of a living zebrafish embryo showing oligodendrocyte progenitor cells glowing with red and green fluorescent proteins. Credit: Appel Lab

Much like the electrical wiring in your house, the nerves in your body need to be completely covered by a layer of insulation to work properly.


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