Influence of silencing RHEB on the biological behavior of the liver cancer cell line SMMC-7721. (A) Cell cycle changes of SMMC-7721 cells with low expression of RHEB were analyzed by flow cytometry. (B) Comparison of the cell cycle changes in SMMC-7721 cells treated with different shRNAs. (C) Analysis of soft agar colony-formation ability of SMMC-7721 cells with downregulated RHEB expression. The experiments were performed in triplicate, and representative images are shown. RHEB, Ras homolog enriched in brain; scr, scramble; FL2-A, fluorescence 2-area; shRNA, small hairpin RNA.