muscle
• in quadriceps muscles
• increased variation in fiber size
• very few centrally located nuclei
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• extensive, at 3 months of age
• grouped atrophy in quadriceps muscles
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• significantly reduced number of choline-acetyltransferase-positive motor neurons in spinal cord at 8 weeks of age
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behavior/neurological
• reduced muscle strength from 4 weeks of age in all mice
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• from 4 weeks of age in all mice
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nervous system
• significantly reduced number of choline-acetyltransferase-positive motor neurons in spinal cord at 8 weeks of age
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growth/size/body