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An 41-year-old patient with suspected myopathy was examined. A biceps biopsy was performed.Electronmicroscopy analysis revealed normal structure of muscle fibers (Fig. 1,2). In single musclefibers, mitochondrial cristae derangement was visible (Fig. 3). Quite extensive perivascularinfiltration of lymphoid cells was observed (Fig. 4,5,6)
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Operational Program Digital Poland, 2014-2020, Measure 2.3: Digital accessibility and usefulness of public sector information; funds from the European Regional Development Fund and national co-financing from the state budget.