muscle
• mitochondria found in focal aggregates with desmin intermediate filaments
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• high fraction of small diameter fibers in soleus and diaphragm
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• high fraction of hypertrophic fibers in soleus and diaphragm
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• numerous centrally nucleated fibers in the soleus at 1 year
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• numerous necrotic fibers in the soleus at 1 year
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cellular
• reduced respiratory activity of mitochondria in muscle fibers
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