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).
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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