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方法：用免疫组化法检测了29例结肠癌，30例溃疡性结肠炎和28例正常人结肠组织中PS 2和癌胚抗原(CEA)的表达。
Methods: PS2 and CEA protein expression in the tissues from 29 patients with colonic carcinoma, 30 ulcerative colitis and 28 normal control were measured by the immunohistochemical method.
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