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The effects of BTG1 on CEA expression and secretion in colorectal cancer cells. The CEA expression was examined in HCT-15 and its BTG1 transfectants by real-time RT-PCR (A) and Western blot (B). CEA secretion was also determined by ELISA (C). Results are representative of three different experiments, and data are expressed as mean ± SE. *P < 0.05, compared with the transfectants.
