%0 Journal Article
%T Purification and identification of avian influenza viruses causing mixed multi-infection<br>混合感染的多种亚型禽流感病毒的纯化与鉴定
%A Baofeng Qiu
%A Wujie Liu
%A Shunlin Hu
%A Yinghua Tang
%A Daxin Peng
%A Xiufan Liu
%A <br>仇保丰
%A 刘武杰
%A 胡顺林
%A 唐应华
%A 彭大新
%A 刘秀梵
%J 微生物学报
%D 2010
%I 
%X Abstract: Objective] To purify and identify avian influenza viruses causing multi-subtype mixed infection. Methods] By using chicken embryo end-point dilution or combining with specific antiserum neutralizing tests, the mix-infection samples of 2 or 3 subtyping avian influenza viruses were purified, and the results of purification were identified by RT-PCR and hemagglutination inhibition tests. These methods were used to purify and identify 214 positive samples of avian influenza viruses. Results] The method of chicken embryo end-point dilution was able to purify the viruses from samples by dilution and subculturing six or seven passages. However, combining this method with the specific antiserum neutralizing tests, the samples could be purified after four or five passages. The accuracy of identification could be obviously enhanced by using RT-PCR and hemagglutination inhibition tests simultaneously. Based on these methods, 233 of avian influenza viruses, which constituted 13 subtypes, were purified from 214 samples. Conclusion] Both chicken embryo end-point dilution method and its combination with specific antiserum neutralizing tests could be used to purify avian influenza viruses of mix-infection, however, the latter may be more focused and valid. In addition, the results of purification should also be evaluated by multiple means.
%K Keywords: Avian influenza virus
%K mixed infection
%K purification
%K identification<br>关键词：禽流感病毒
%K 混合感染
%K 纯化
%K 鉴定
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=A3C6BA55AB623B90FA9104CFFC826F3C&aid=815F9A7CEE8D88E31F1B39782FA7F1AA&yid=140ECF96957D60B2&vid=771152D1ADC1C0EB&iid=CA4FD0336C81A37A&sid=D767283A3B658885&eid=4BB057F167CF3A60&journal_id=0001-6209&journal_name=微生物学报&referenced_num=1&reference_num=0