Purified IBDV was obtainecd from infected bursa of Fabricius by freon extraction and patassiumtartrate-glycerol density centrifugation to remove tissue proteins and other components.

• 用氟利昂去除法氏囊组织杂蛋白；并经甘油-酒石酸钾密度梯度离心进一步纯化；通过电镜观察、光密度测定和聚丙烯酰胺凝胶电泳(PAGE).；证明得到的鸡传染性法氏囊病病毒(IBDV)形态完整。