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Figure 3: Sural nerve and vastus medialis muscle biopsy showing significant loss of myelinated fibers with consequent endoneurial fibrosis; (a and b): There are several thinly myelinated remyelinating fibers with formation of "onion bulbs" which were seen scattered in all fascicles admixed with fibers of normal myelin thickness (a, inset), characteristic of a demyelinating hypertrophic neuropathy. The muscle biopsy revealed small groups of atrophic angulated fibers reflecting neurogenic atrophy (c)

Figure 3: Sural nerve and vastus medialis muscle biopsy showing significant loss of myelinated fibers with consequent endoneurial fibrosis; (a and b): There are several thinly myelinated remyelinating fibers with formation of