Fig. 5
From: Id4 promotes cell proliferation in hepatocellular carcinoma
Overexpression of Id4 enhanced the tumorigenic potential of HCC cells in vivo. SMMC-7721 cells that stably expressed Id4 were injected subcutaneously into nude mice; the cells transfected with pWPXL vector were used as a control. After 5 weeks, the mice were euthanized, and the tumors were removed. a The xenograft tumors formed in nude mice. b The wet weight of the tumors. **P < 0.01