| In these lesions, the hyphae appeared to invade the perineurium, the loose fascial sheath surrounding the nerve. |
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| Briefly, the nerve fibers were closely packed in the nerve bundles in the endoneurial areas surrounded by the perineurium and the epineurium. |
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| It strongly stained the perineurium but did not stain the nerve fibers within the perineurium, thus giving a ringlike staining pattern. |
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| The endoneurium is continuous with the more abundant connective tissue perineurium, which envelops bundles of nerve fibers. |
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| Excessive fibroadipose tissue proliferates along the perineurium, surrounding the nerve bundles within the nerve sheath. |
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| The results show the instantaneous shear modulus of the ultrastructures in decreasing order is perineurium, endoneurium, and epineurium. |
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| In addition, perineurium thickening was found in the CFA groups. |
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| With axonotmesis, the Schwann cell, the epineurium, and perineurium remain intact. |
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