Fig. 1

A set of 142 genes specifically expressed in human hepatocytes. a Gene expression profiles of 81 cell types. Columns present the gene expression profiles of specific cell types. The listed cell types match the 81 types in Additional file 2: Table S1 in sequence. Hierarchical clustering according to gene expression was conducted across the 81 cell types. The "group" marker represents their classifications. b Expression profiles of the 225 genes, showing a specific transcription pattern in mouse hepatocytes in samples across 54 human tissues from the GTEx project. Each column presents the gene expression profile of a sample. Hierarchical clustering according to gene expression was conducted. The "group" marker represents their classifications. c Expression of the Hep gene signature (Hep index) of samples across the 54 human tissues. d Expression profiles of the 142 genes belonging to the Hep gene signature in samples across 32 tumor types from the TCGA project. Each column presents the gene expression profile of a sample. e Hep index of samples across 32 tumor types from the TCGA project