Figure 8. (A) Average values of the number of mitochondria per 1 μm2 of muscle fiber in naked mole rats of different ages. (B) Average values of sectional area of muscle fiber mitochondria in 6-month-old, 5-year-old and 11-year-old naked mole rats. (C) Area occupied with mitochondria in muscle fibers in naked mole rats of different ages (%). * The difference is significant at p < 0.05. Error bars on all the graphs correspond to the standard error.