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(31) In MS, the myelin coating of nerve fibers becomes inflamed and scarred.

(32) Brain biopsy revealed severe damage to the myelin sheath. Question is, why?

(33) Filamentous neurofibrils and mitochondria were observed in axons. Axons were enveloped by myelin sheath, presented alternately dark and bright lamellae concentric configuration.

(34) The signal characteristics probably result from dense gliosis and diminished myelin sheaths in the hemartomatous areas.

(35) Myelin sheaths showed shell-like structure, but its lamellar structure disappeared. Swelling of neurons and mitochondria was more obvious than which in 2-hour post injury group.

(36) It forms the myelin sheath of nerve fibres which facilitates the transmission of nerve impulse and insulates against cross-talks.

(37) In nerves outside the brain and spinal cord, a sausage-shaped glial cell called a Schwann cell forms myelin.

(38) RESULTS: After trauma, some neurons displayed histopathologic changes of necrosis and apoptosis, axon myelin sheath internalization and disconnection.

(39) Neuroglia consisting of cells similar to but smaller than astrocytes, found in the central nervous system and associated with the formation of myelin.

(39) Sentencedict.com is a sentence dictionary, on which you can find excellent sentences for a large number of words.

(40) In MS, loss of the myelin sheaths which act as insulating layers, leads to the nerve fibres in the brain becoming damaged.

(41) Result Degenerated myelin - activated M Φ CM could enhanced Schwann cells ? ? activity and promoted cell proliferation obviously.

(42) The electron microscope was used to study the histomorphologic changes of myelin sheath in VTA.

(43) Teased fiber analysis showed an increased frequency of axonal degeneration and regeneration asas excessive myelin irregularity.

(44) Malnourished children have smaller brains, fewer neurons and synapses, shorter dendrites and less myelin.

(45) Insufficient or poorly working myelin causes a number of diseases, including a rare and fatal congenital disorder called pediatric leukodystrophy that affects thousands of children.

(46) And wide gaps appeared between axon and myelin sheath, and between layers of myelin shea.

(47) Oligodendrocytes produce myelin insulation, crucial for the transmission of messages around the nervous system.

(48) "Because there is no myelin damage at birth, we assumed prions are needed to maintain the quality of the myelin sheath, which diminishes throughout life, " says Aguzzi.