Expression analyses of SET7/9 and E2F1 in tumor and normal tissues. (A) The transcriptional levels of SET7/9 and E2F1 in tumor and normal tissues of different cancer types. (B) The transcriptional levels of SET7/9 and E2F1 in HCC tumor and normal tissues. (C) Correlation between the expression level of E2F1 and tumor grade and metastasis status of clinical HCC samples. The asterisks on each bar in the right panel indicate the statistical significance between samples with different levels of tumor grade and normal sample. *p<0.05, **p<0.01. ***p<0.001.