Figure 4. Comparison of the mean ratios of epi-driver gene expression levels in each category between young and aged samples of Huntington’s disease (HD) mice and control mice. In (A) each bar shows the fold change of epi-driver gene expression levels in each category between aged and young samples. In (B) the mean fold changes, standard deviations (STD), and p-values (paired-sample t-test) between indicated comparisons are represented for the graphs in A. Wo and wy, old and young wild-type samples; Ho and Hy, old and young HD samples.