Archival formalin fixed, paraffin embedded specimens from 55 primary NPC patients, who had biopsy in Cancer center, Sun Yat-sen University during April in 1996 to June in 1998, were investigated.

• 收集1996年4月至1998年6月在中山大学肿瘤防治中心鼻咽癌科行鼻咽活检的鼻咽癌患者的标本55份。