Figure 3. The relative expressions of demethylation- and DNA repair-related genes during regeneration of zebrafish fin by qPCR. The expression of demethylation- and DNA repair-related genes were examined via qPCR at 0, 18, 30, and 72 hpa. The expression level at 0 hpa is set as 1.0, and the relative mRNA levels (y-axis) of each gene were shown at 18, 30, and 72 hpa. The relative expressions of gadd45ba, gadd45bb, apobec2b, tdg, mbd4, tet2, tet3, and parp1 were not markedly upregulated after regeneration. In contrast, the relative expression of gadd45 g was significantly upregulated at 18 and 30 hpa. * p < 0.001 by Student’s t-test. Error bars represent the standard error of four independent experiments.