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应用多聚酶链反应技术（ＰＣＲ）体外扩增脑脊液中结核分枝杆菌ＤＮＡ，酶斑免疫结合技术检测结核杆菌蛋白抗原及ＡＢＣ－ＥＬＩＳＡ法检测相应抗体联合检测诊断结核性脑膜炎，阳性率分别为：８３．７％（３６／４３），７６．７％（３３／４３），７４．４％（３２／４３）。讨论三者间发病不同期的关系，三者有阳性交叉现象。
Mycobacterium tuberculosis DNA in cerebrospinal fluid was amplified by polymerase chain reaction (PCR) in vitro. Mycobacterium tuberculosis antigen was detected by enzyme-linked immunosorbent assay (ABC-ELISA) and combined detection of corresponding antibodies by ABC-ELISA. The positive rates were: 83.7% (36/43), 76.7% (33/43), 74.4% (32/43). Discuss the relationship between the three different stages of the disease, the three positive cross phenomenon.