Westbury H A
Avian Dis. 1979 Jul-Sep;23(3):564-70.
Seventeen Australian strains of Newcastle disease virus were tested for their biological properties: mean death time, heat stability of the hemagglutinin and infectivity of the virus at 56 C, the elution time of virus from chicken erythrocytes, and the ability to hemagglutinate equine red blood cells. The strains differed considerably in their reactions. All had mean-death-time indices of 112 or greater, indicating that all were lentogenic. Strains were identified that had heat-labile and -stable hemagglutinin and infectivity, slow and fast elution, and variable ability to agglutinate equine erythrocytes. The significance of the results is discussed in terms of their usefulness in identifying exotic strains of the virus.
对17株澳大利亚新城疫病毒株进行了生物学特性测试：平均死亡时间、血凝素的热稳定性以及病毒在56℃时的感染性、病毒从鸡红细胞上的洗脱时间，以及凝集马红细胞的能力。这些毒株的反应差异很大。所有毒株的平均死亡时间指数均为112或更高，表明均为缓发型。鉴定出了具有热不稳定和热稳定血凝素及感染性、洗脱速度慢和快，以及凝集马红细胞能力各异的毒株。根据这些结果在鉴定该病毒外来毒株方面的有用性对结果的意义进行了讨论。
