METHODS: The serum levels of CEA and CA19-9 were detected by indirect enzyme-linked immunosorbent assay (ELISA) in 60 patients (30 cases received chemotherapy during operation while 30 cases did not) diagnosed with colon cancer and 30 normal volunteers.

• 方法:采用ELISA方法测定30例术中应用化疗药物大肠癌患者及30例术中未应用化疗药物大肠癌患者手术前后外周血中CEA和CA19-9含量的变化；同时选用30例非肿瘤人群作为正常对照.