Methods The specific antibody in the serum of135SARS patients were detected by in direct ELISA and double antigen sandwich method.

方法：采用间接ELISA法和双抗原夹心ELISA法检测SARS患者血清中特异性抗体水平。

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It was demonstrated that the negative results in direct FA assay and the double antibody sandwich ELISA were found, but the result in RT-PCR was positive.

结果死亡病人脑组织的直接FA试验和双抗体夹心elisa检测为阴性，但RT - P CR检测结果为阳性。

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