283 specimen of expression of new tumor marker GP87 in the tissues of gastric cancer and gastric precancerous lesions were determined by sABC Immunohistochemical stain assay.

• 目的探讨新的肿瘤标志物GP87在老年胃癌及胃癌前病变中表达的情况，从而确定其在上述病变中的应用价值。