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Light and electron micrographs in the cauda equina at the site of constriction after 3 weeks.A, Light microscopy revealed nerve fiber degeneration. Light.

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Presentation on theme: "Light and electron micrographs in the cauda equina at the site of constriction after 3 weeks.A, Light microscopy revealed nerve fiber degeneration. Light."— Presentation transcript:

1 Light and electron micrographs in the cauda equina at the site of constriction after 3 weeks.A, Light microscopy revealed nerve fiber degeneration. Light and electron micrographs in the cauda equina at the site of constriction after 3 weeks.A, Light microscopy revealed nerve fiber degeneration. (Toluidin blue stain, ×50).B, Electron microscopy revealed abundance of macrophages phagocytosing the degenerated myelin sheath (×1500).C, High magnification of a capillary revealed separation of the tight junction to allow communication between the vascular lumen and endoneurial space, indicating breakdown of the blood-nerve barrier and a macrophage capable of passing through the vessel walls (×5000). S. Kobayashi et al. AJNR Am J Neuroradiol 2006;27: ©2006 by American Society of Neuroradiology

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