Using immunohistochemical method the expression of ras gene protein and EGFR in 75 cases with stomach carcinoma was studied.

• 应用免疫组化方法检测ras基因蛋白和表皮生长因子受体（EGFR）在75例胃癌组织中的表达，研究它们与胃癌病理特征及预后关系。