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myelin |
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myelin, myeline a white tissue forming an insulating sheath (myelin sheath) around certain nerve fibres. Damage to the myelin sheath causes neurological disease, as in multiple sclerosis myelin [′mī·ə·lən] (neuroscience) A soft, white fatty substance that forms a sheath around certain nerve fibers. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Myelination of tracts within the developing human fetal brain has just begun by 25 weeks (Herschkowitz 1988). The mix of unmyelinated nerve cells from embryonic mice, cells that don't produce NRG1-III, and glial cells from adult rats showed no myelination. Preschool children who receive CNS prophylaxis at the same time as chronological postnatal events of brain development, including glial cell proliferation and myelination, may be more sensitive to the neurotoxicity of radiation and chemotherapy; therefore, they are at greater risk for CNS damage than children with fully developed neurological systems. |
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