| 1. | Chickens at 4 weeks of age were the most sensitive
结果表明，这些野毒株的毒力差异甚大。 |
| 2. | Immunity of live attenuated japanese encephalitis vaccine to differentwild je virus strains
流行性乙型脑炎减毒活疫苗国内外不同野毒株的免疫性 |
| 3. | A survey on the carrier of pseudorabies virus in the immunized pigs on some breeder farms of guangxi
广西部分种猪场免疫猪伪狂犬病野毒感染情况调查 |
| 4. | However , the homologies of g and n gene between wild strains and attenuated strain ctn are much high
三株野毒与减毒株ctn之间的n和g基因同源性均高于与3ag 、 era株的同源性。 |
| 5. | Products initially well - received , however in most cases , did not provide adequate protection in face of m . hyo field challenge
即使初次免疫应答良好，但大多数情况下，当面对田间野毒挑战时，还是不能提供足够的保护力。 |
| 6. | In this study three wild strains of rabies virus were isolated from nanning , longan and bama of guangxi and were designated as 119 , gxla and gxbm respectively
本试验从广西南宁、隆安和巴马分离到三株狂犬病毒野毒株，分别编号为119 、 gxla和gxbm 。 |
| 7. | Computer - base phylogenetic tree among the two strains of gx and other 16 strains mentioned above were obtained by analyzing nucleotide sequences of e2 gene
这些变异极有可能使广西流行野毒逃避hclv的免疫保护。 gxnn 、 gxlz的e 。基因与已知序列的16株国内外毒株的e 。 |
| 8. | Relatively , the new wibdv strains gx8 / 99 had less homology to wibdv reference strain hk46 and other 3 field strains as 96 . 8 % - 97 . 2 % at dna or aa levels , than the homology among hk46 and 3 strains , strains gx8 / 99 more than 98 . 4 % - 98 . 6 % at dna or aa levels
为研究病毒的核酸分子结构与其致病性的关系，本研究选取了在致死率上不同的4个ibdv野毒株，比较了它们的vpz基因高变区共494个碱基序列。 |
| 9. | The amplified e2 fragments of two hcv strains were all 1280bp in length by 2 % agrose gel electrophoresis . expected size of 1280bp of 2 fragments and their specificity were confirmed by restriction endonuclease digestion and then they were cloned respectively into pmd - 18t vector
以此病毒rna为模板，利用rt - pcr技术，扩增出了猪瘟野毒株hcv - jn 、 hcv - yc完整的e2基因，用pmd - 18t载体克隆，经电泳检测、酶切分析及pcr鉴定初步证实了所扩增片段的特异性。 |
| 10. | Because of difficulty in differentiating eiav wild strain from the vaccine strain （ dla ） in vivo ， we have to build a fast identification method between wild strain and vaccine strain of eiav s2 is an accessory protein of equine infectious anemia virus ( eiav ) , the s2 function is not fully defined
由于我国马传贫弱毒疫苗存在野毒和疫苗毒鉴别困难的问题，目前尚未得到欧美等发达国家的认证，如要进入国际市场，急需建立一种eiav强、弱毒快速鉴别诊断方法。 |
