背景说明：Carcinoembryonic antigen peptide 1 (CAP1) 是大肠癌组织产生的一种糖蛋白，作为抗原可引起患者的免疫反应。Carcinoembryonic antigen peptide 1 是一个广谱性肿瘤标志物。 In Vitro：Carcinoembryonic Antigen (CEA) as tumor marker in lung cancer. The use of CEA as a prognostic and predictive marker. CEA is a glycoprotein involved in cell adhesion， and is normally produced during fetal development but the production stops before birth. CEA is a glycosyl phosphatidyl inositol (GPI)-cell surface anchored glycoprotein whose specialized sialofucosylated glycoforms serve as functional colon carcinoma L-selectin and E-selectin ligands， which may be critical to the metastatic dissemination of colon carcinoma cells. 参考文献：[1]. Grunnet M， et al. Carcinoembryonic antigen (CEA) as tumor marker in lung cancer. Lung Cancer. 2012 May;76(2):138-43.
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