Figure 1.
Serum CEA expression level before and after treatment in experimental and control group. The serum CEA level after treatment was significantly lower than that before treatment in experimental group (P<0.05), as well as in control group (P<0.05). Serum CEA level after treatment was lower in experimental group than that in control group (P<0.05). *P<0.05, compared with experimental group after treatment; #P<0.05, compared with control group after treatment; CEA, carcinoembryonic antigen.