摘要
笔者应用聚合酶链反应（PCR）合成系统，以逆转录的SabinⅠ、Ⅱ、Ⅲ型病毒cDNA为模板，在反应液中加入标记的Dig-dUTP，经扩增制备了地高辛配基标记的脊髓灰质炎病毒cDNA探针、该法比PCR扩增产物后，电泳，片段回收到标记、提纯，常需3天。结果比较PCR技术直接制备地高辛标记cDNA探针方便，快速，标记率高，用于型别鉴定比中和试验快，敏感，特异性强等优点。
A study including reverse transcribed cDNAs of Sabin Ⅰ, Ⅱ, Ⅲ virus used as templates and digoxigenin-labeled dUTP added to the reaction solution was carried out. After amplification, digoxigenin-labeled poliovirus cDNA probe was prepared by this PCR technique. Results showed that the direct preparation of digoxigenin-labeled poliovirus cDNA probe by PCR is a convenient and rapid method with a high labeling rate. Compared with neutralization test, the probe has the advantages of more rapid,more sensitive and more specific for poliovirus typing.
出处
《中华流行病学杂志》
CAS
CSCD
北大核心
1997年第3期164-166,共3页
Chinese Journal of Epidemiology
