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近三十年来，胃癌的发病及死亡率虽在世界范围内呈持续下降趋势，但仍是迄今死亡率最高的肿瘤［1］。众所周知，目前的胃癌标记物在胃癌中阳性率仅在20％-69％之间，阳性率和特异性都不满意。为此我们通过对52例胃癌、其它消化道肿瘤及30名正常人血清中CA72-4、MG-Ag（胃癌抗原
In the past three decades, the onset and death rate of gastric cancer have continued to decline in the world, but it is still the highest mortality rate so far [1]. It is well known that the current positive rate of gastric cancer markers in gastric cancer is between 20% and 69%, and the positive rate and specificity are not satisfactory. To this end, we used serum CA72-4, MG-Ag (gastric cancer antigen) in 52 cases of gastric cancer, other digestive tract tumors, and 30 normal individuals.