Methods By using immunohistochemical method and TUNEL method, the expressions of TNFR1, TNFR2, TRAF2 and the apoptotic index were examined in 33 laryngeal squamous carcinoma tissues.

• 方法：利用免疫组织化学及原位末端标记法，对33例喉鳞状细胞癌组织TNFR1、TNFR2和TRAF2的表达及其凋亡指数进行检测。