growth/size/body
• from 1 - 6 months the body weight of homozygotes averaged 20% less than wild-type littermates
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muscle
• the striation pattern in sections from the soleus muscle of adult homozygotes is abnormal
• between 1 and 6 months of age myofibers from the soleus and quadriceps muscles display misalignment of the Z-bands frequently associated with widening of the Z-band and thinning of surrounding structures
• the frequency of myofibril branching and splitting is also increased in the soleus and quadriceps muscles between 1 and 6 months of age
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