胃癌是常见恶性肿瘤之一,在我国发病率很高。为了提高诊断率,国内外试图寻找肿瘤特异性物质作了大量试验,自从甲种胎儿球蛋白(AFP)及癌胚抗原(CEA)的发现,对消化系统癌肿免疫诊断提供了有价值的线索,随之,胃癌免疫学的诊断也有一定的进展。国内自从在胃癌组织中发现α_2GP.以来,各地相继利用 Gastric cancer is one of the most common malignancies and has a high incidence in our country. In order to improve the diagnostic rate, a large number of experiments have been conducted at home and abroad in search of tumor-specific substances. Since the discovery of AFP and CEA, valuable diagnostic clues have been provided for the diagnosis of cancer in the digestive system. As a result, there has been some progress in the diagnosis of gastric cancer immunology. In China, since the discovery of α_2GP.