virulence attenuation of

英 [ˈvɪrələns əˌtenjʊˈeɪʃn ɒv]

美 [ˈvɪrələns əˌtenjʊˈeɪʃn əv]

网络毒力减弱

It can provide theoretical references for further studying on replication, virulence and its determinants, cell and host tropism, pathogenesis, functions of products of genes, attenuation and marker vaccine of CSFV.
为进一步研究猪瘟病毒的复制机理、毒力及其决定因素、致弱机理、致病机理、基因产物的功能、宿主嗜性及标记疫苗的开发提供理论参考。
Common marmosets with negative serum antibodies against hepatitis A virus ( anti HAV) and normal liver functions were used for the tests of passage of H 2 vaccine strain of HAV to explore its residual virulence after attenuation and possibility of its reversion.
为探索甲型肝炎减毒活疫苗的残余毒力及毒力返祖的可能性，将血清抗－HAV阴性，肝功能正常的普通狨猴用于甲型肝炎减毒活疫苗H2株传代试验。
Generation of persistent infection was speculated from virulence attenuation of virulent CSFV under immunity pressures during chronic prevalence.
推测猪瘟病毒持续感染毒株的产生，可能是长期流行的强毒株在免疫压力下毒力弱化的结果。