目的探讨结直肠癌患者血循环中抗-癌胚抗原特异性抗体的存在情况和及其临床意义。

Objective To evaluate the clinical significance of anti-CEA antibodies in the serum of patients with colorectal carcinoma.

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目的对抗癌胚抗原单区抗体进行表达研究。

Objective To probe into expression of single domain antibody for anticarcinoembryonic antigen (CEA).

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结论：胃肠道癌患者血清中抗癌胚抗原(CEA)抗体的检出率较高，这些抗体可作为胃肠道癌的一种肿瘤标志物。

Conduskm: in this study, a high number of gastrointestinal malignancies patients have circulating CEA specific antibodies in their sera and these antibodies may be used as diagnostic markers.

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