Figure 3.

Mean average residual strain in the dura mater of immature rats (postnatal age 2–26 days) versus mean average residual strain in the dura mater of mature rats (postnatal age 95–105 days). The mean average residual strain for immature rats was significantly larger than the mean average residual strain for the mature rats (4.96±1.54% versus 0.39±0.13%, p<0.0001). However, the mean strain calculated in the mature rats is of the order of the minimum measurement that could be made (see §4), and indicates that the strains in the mature rats were too small to measure accurately using our experimental approach.