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Myelinated axons in a rat spinal root. Myelin is a type of fat that forms a sheath around and thus insulates the axon to protect it from losing the electrical current needed to transmit signals along the axon. The axoplasm inside the axon is shown in pink.
Related to 3397.
Tom Deerinck, National Center for Microscopy and Imaging Research (NCMIR)
Tom Deerinck and Mark Ellisman, National Center for Microscopy and Imaging Research
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