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以含Ｎｅｇｒｉ小体（ＮＢ）的７例海鸟及４例小脑切片，分别作Ｍａｃｃｈｉａｖｅｌｌｏ（马氏）和磷钨酸伊红（ＥＰＴ）染ＮＢ，以单克隆－狂犬病毒核衣壳蛋白抗体为一抗作ＳＰ染色，并作免疫加乌氏和／或ＥＰＴ的双重染色。见ＮＢ内部含狂犬病毒核衣壳蛋白抗原（ＲＶＡｇ）较少，免疫反应较弱，只外围仍见免疫反应较强之外环。少数ＮＢ内有内小体，也由免疫反应强阳性之小环及阴性之内容物构成。在小脑可见免疫反应极弱甚至阴性之ＮＢ。这些现象提示ＮＢ的形成可能是狂犬病毒体（ＲＶ）的退变现象。
Seven seabirds and four cerebellar slices containing Negri body (NB) were used to stain Macchiavello (Markov) and EPT-stained NBT. The monoclonal antibodies to rabies virus nucleocapsid protein Primary antibodies were stained for SP and double stained for immunopotentiation and / or EPT. See NB containing rabies virus nucleocapsid protein antigen (RVAg) less immune reaction is weak, the outer periphery is still strong immune response to the outer ring. A small number of NB within the body, but also by the strong immune reaction of small rings and negative content. In the cerebellum visible immune response is very weak or even negative NB. These phenomena suggest that the formation of NB may be degeneration of rabies virus (RV).