Methods The expression of S100A2 protein was detected with immunohistochemical technique(SP) in 60 cases of esophageal squamous cell carcinoma tissues and 60 cases of the esophageal mucosa tissues at the operation cutting edge.

• 方法采用免疫组织化学(SP)方法检测60例食管鳞状细胞癌(ESCC)组织和60例手术切缘食管黏膜组织中S100A2蛋白的表达水平。