Methods The human colon cancer line cell LoVo was implanted subcutaneously in BALB/C nude mice,then the mice were allocated into 4 groupsxontrol group(6 mice),ETB-2A(3g/kg/d,9 mice),ETB-2B(4.5g/kg/d. 9 mice),ETB-2C(6g/kg/d, 9 mice).

• 方法 人结肠癌细胞LoVo接种于BALB/C裸鼠皮下建立动物模型，裸鼠随机分为四组：对照组(6只)、ETB-2A组(9只)、ETB-2B组(9只)、ETB-2C组(9只)。