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car·ci·no·em·bry·on·ic antigen AHD[kär'sə-nō-ĕm'brē-ŏnʹĭk] D.J.[ˌkɑːsənəʊˌembriːˈɒnɪk]K.K.[ˌkɑrsənoˌɛmbriˈɑnɪk]n.（名词）abbr. CEA【缩写】- A glycoprotein present in fetal gastrointestinal tissue and in the cells or serum of adults having certain types of cancers. It is used clinically to monitor the effectiveness of a treatment, as for colorectal cancer.癌胚抗原：糖蛋白，存在于胎儿胃肠组织和患有某些癌症的成人的细胞及血清中。临床上用于监测治疗效果，如直肠结肠癌
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