To discuss AFP, CEA and CA199 change in every age group of occupational disease staffs.

探讨职业病工作人员甲胎蛋白（AFP）、癌胚抗原（CEA）及CA199在各年龄段的变化。

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Objective To explore the clinical value of combined detection of alpha fetoprotein(AFP), carcinoembryonic antigen(CEA), CA125 and CA19-9 in the diagnosis of malignant tumors in digestive system.

目的探讨联合检测血清中肿瘤标志物甲胎蛋白（AFP）、癌胚抗原（CEA）、糖类抗原125（CA125）、CA19-9对消化系恶性肿瘤的诊断价值。

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Objective To set up a liquid chip system for the detection of the tumor markers AFP, CEA, CA19-9 and CA125 in clinical practice.

目的：建立液相蛋白芯片测定afp、CEA、CA19 - 9、CA125等肿瘤标志物的方法，讨论其应用于临床检验的可行性。

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