本文用抗补体免疫酶法检查鼻咽部脱落细胞的EBNA,结果①79例鼻咽癌病人全部阳性,其阳性检出率比细胞学(87.3％)和组织学(91.1％)方法高;②4例初次检查EBNA阳性,但细胞学和组织学阴性者,3个月内复查也找到癌细胞;③18例头颈部其他肿瘤病人和21例胎儿全部阴性,并为细胞学和组织学方法所证实。这表明抗补体免疫酶法检查EBNA是特异和敏感的,有助于鼻咽癌的早期诊断。除了在鼻咽癌细胞发现EBNA外,在鼻咽部柱状上皮细胞和增生细胞也发现EBNA,这可能与EB病毒引起的癌变过程有关。 In this study, the EBNA of exfoliative cells in the nasopharyngeal was examined by anti-complementing enzyme immunoassay. As a result, 179 cases of NPC patients were all positive. The positive detection rate was higher than that of cytology (87.3%) and histology (91.1%); 24 cases. For the first time, positive EBNA was detected, but cytology and histology were negative. Cancer cells were also found within 3 months of follow-up; 318 head and neck and other tumors and 21 fetuses were all negative and confirmed by cytological and histological methods. This indicates that the anti-complementing enzyme immunoassay for detecting EBNA is specific and sensitive, which helps early diagnosis of nasopharyngeal carcinoma. In addition to the discovery of EBNA in nasopharyngeal carcinoma cells, EBNA was also found in the columnar epithelial cells and proliferative cells of the nasopharynx, which may be related to the carcinogenesis caused by EB virus.