Methods Hp-L was examined in 98 patients with EC and 30 controls by Gram stain, electronmicroscopic technique and immunohistochemical stain (ABC method) .

• 方法应用革兰染色、电镜和免疫组化ABC法,检测98例食管癌和30例对照组(食管癌切缘正常组织)的Hp-L型;