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Muscle biopsy. (A and B) Haematoxylin-eosin staining. Necrotic fibres (asterisk), inflammatory infiltrate (arrow), increased fibrosis tissue (arrowhead), hypercontracted fibres (plus symbol). Magnification: ×20 (left) and ×40 (right). (C) Immunofluorescence of sarcoglycan subunits. SG = sarcoglycan.
