作者采用差异离心术、超薄切片与电镜术对豆野螟颗粒体病毒进行分离纯化、组织病理及超微结构研究。发现颗粒体多呈椭圆形，直径大小３００～５００ｎｍ×２００～３００ｎｍ；病毒粒子呈杆状，稍弯曲，大小２００～３００ｎｍ×４０～５０ｎｍ。该病毒侵染宿主脂肪体，表皮、中肠上皮、气管、马氏管等组织的细胞核，并观察到颗粒体病毒在细胞核中复制的过程。 The authors used differential centrifugation, ultra-thin sections and electron microscopy of bean borer particle virus isolation, purification, histopathology and ultrastructure studies. Most of the granules were oval in shape with diameters of 300-500 nm × 200-300 nm. The virus particles were rod-shaped and slightly curved with the size of 200-300 nm × 40-50 nm. The virus infects the nucleus of the host fat body, epidermis, midgut epithelium, trachea, Markovskih tube and other organizations, and the process of granulovirus replication in the nucleus was observed.