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Figure 3: (a) Muscle biopsy shows large areas of group atrophy with few preserved fibers (hematoxylin and eosin, ×40), (b) The group of atrophic fibers show angulation (yellow arrow, hematoxylin and eosin, ×100). (c) Nerve biopsy shows normal nerve fascicles (hematoxylin and eosin, ×40), with (d) preserved myelin (luxol fast blue, ×200) and (e) preserved axons (neurofilament protein immunohistochemistry, ×100)

Figure 3: (a) Muscle biopsy shows large areas of group atrophy with few preserved fibers (hematoxylin and eosin, ×40), (b) The group of atrophic fibers show angulation (yellow arrow, hematoxylin and eosin, ×100). (c) Nerve biopsy shows normal nerve fascicles (hematoxylin and eosin, ×40), with (d) preserved myelin (luxol fast blue, ×200) and (e) preserved axons (neurofilament protein immunohistochemistry, ×100)