Additional file 3: Figure S1. of Global analysis of DNA methylation in hepatocellular carcinoma by a liquid hybridization capture-based bisulfite sequencing approach

Tumors are separated from adjacent non-tumors through analysis of the patterns of the promoter methylomes. A, principal component analysis (PCA) of the average methylation levels of total promoters in 8 pairs of HCCs and non-tumor samples; B, cumulative curves of –log(P value) from the chi-square test on intra-group variations of CpG methylation levels in HCC tumors (T) and non-tumors (N).