将腮腺炎病毒S79株培养液用中空纤维超滤器进行浓缩，经PEG沉淀后，采用蔗糖密度梯度离心法纯化抗原；
The tissue culture of mumps virus S79 strain was purified by ultrafiltration on hollow fiber, PEG precipitation and density gradient ultracentrifugation.
方法利用传统鸡胚培养方法制备新城疫病毒（NDV），通过PEG-6000沉淀，差速离心和蔗糖密度梯度离心等方法提取纯化了新城疫病毒（NDV）。
Methods Newcastle disease virus(NDV) was prepared in embryonic egg. NDV was purified by deposited of PEG-6000, speed centrifugation and sucrose—density gradient—centrifugation(SDGC).
应用推荐