Figure 1.

Hierarchical clustering of the patterns of variation in expression of 3180 genes (represented by 3964 cDNA), in 156 liver tissues (74 nontumor liver and 82 HCC). The data are shown in a table format, in which rows represent individual genes and columns represent individual tissue or cell sample. The color in each cell reflects the expression level of the corresponding gene in the corresponding tissue, relative to its mean expression level across the entire set of tissue samples. The scale extends from fluorescence ratios of 0.25–4 relative to the mean level for all samples. Gray indicates missing or excluded data. Expression of the same genes in 10 HCC cell lines is similarly represented in the panel to the left of the main panel. See supplementary information for the full data, including sample names.