Proteome analysis. (A) Comparison of the protein profiles of human hepatocytes, CD133+ Huh7 cells, and CD133- Huh7 cells. The number of identified proteins in human hepatocytes (red), CD133+ Huh7 cells (blue), and CD133- Huh7 cells (yellow) are shown by a Venn diagram. The other colors represent the overlap regions. (B) The protein ratio distribution of CD133+ Huh7 cells/CD133- Huh7 cells.