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Expression of caspase-3 and caspase-9 in EDL (a) and Soleus (b) of female F344BN rats with age as determined by Western blot analysis. Expression of caspase-3 and caspase-9 were normalized to GAPDH. Data are presented as mean ± SEM. *P < 0.05 indicates significant difference from young adult (6-month) age group. † P < 0.05 indicates significant difference from aged (26 month) group. n = 4 each group
