Method:The serum neopterin levels were determined in 54 patients with nasopharyngeal carcinoma (NPC group) and 32 healthy adults (normal group) by ELISA.

• 方法：采用ELISA竞争法检测54例初治鼻咽低分化鳞癌(鼻咽癌组)治疗前、后及32例健康成人(对照组)的血清新蝶呤水平。