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中国农业大学动物医学院吴清民、高齐瑜等将禽流感病毒Ｈ９Ｎ２亚型毒株核蛋白（ＮＰ）基因３’端较为保守的，约３５０ ｂｐ的编编序列通过限制性内切酶ＨａｅⅢ切割、分离后，用随机引物法制备 Ｄｌｇｏｘｉｇｅｎｉｎ －１１－ｄｕＴＰ标记探针。测定该探针的浓度为１００
China Agricultural University School of Veterinary Medicine Wu Qingmin, Gao Qiyu and other avian influenza virus H9N2 subtype virus nucleoprotein (NP) gene 3 ’end conserved about 350 bp of the coding sequence by restriction endonuclease Hae Ⅲ after isolation , Dlgoxigenin-11-duTP labeled probe was prepared by random primer method. The concentration of this probe was determined to be 100