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Lymphocyte penetrating blood-nerve barrier

Electron micrographs of a lymphocyte penetrating through blood-nerve barrier endothelial cells in experimental allergic neuritis, “emperipolesis.” (From: Astrom KE, Webster HD, Arnason BG. The initial lesion in experimental allergic neuritis: A phase and electron microscopic study. J Exp Med 1968;128(3):469-95.)

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