摘要
为了在疫苗生产过程中实现应用传代细胞系大规模增殖培养鸡新城疫病毒(Newcastle disease virus,NDV),试验将NDVⅠ系分别接种至BHK-21、Vero与DF-1细胞系中,并对F1~F3代不同细胞培养物的凝集价、细胞半数感染量(TCID_(50))与鸡胚半数感染量(EID_(50))进行测定,研究NDVⅠ系在BHK-21、Vero与DF-1细胞上的增殖特性,并确定培养NDVⅠ系的最佳细胞系。结果表明:NDVⅠ系在BHK-21、Vero与DF-1细胞中均可增殖,并产生明显的细胞病变;F1~F3代细胞培养物随着传代次数的增加,凝集价(DF-1细胞除外)、TCID_(50)与ELD_(50)下降;用BHK-21细胞培养的病毒毒力显著高于另两种细胞培养物。说明在三种传代细胞系中,BHK-21细胞较DF-1与Vero细胞更适合于NDVⅠ系的生长。
引文
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