H2AX and hepatocellular carcinoma: The γ-H2AX labeling indices were 1.3 ± 4.13 (mean ± SD) (range, 0 ~ 15.0) in liver cirrhosis, 2.4 ± 5.67 (0 ~ 21.3) in low-grade DNs, 4.1 ± 10.42 (0 ~ 40.2) in high-grade DNs, and 10.3 ± 17.00 (0 ~ 49.0) in HCC (Figure 4A).