在正常或病理细胞的光学显微镜(光镜)研究中,无论是动物还是人体标本,经常遇到诊断的困难或令人难解的一些细胞学问题,如上皮性抑或非上皮性,胞浆颗粒的属性,包涵体的病毒性质等等,都促使应用电子显微镜(电镜)回答这些问题。在尸体材料的超微病理研究中,有时由于选样不当,切片太小,和修块不准或切片丧失,找不到必须观察的客体,需要 In optical microscopy (light microscopy) studies of normal or pathological cells, both animal and human specimens often encounter diagnostic or difficult cytological problems such as epithelial or non-epithelial cytoplasmic granules The nature of the virus, the nature of the inclusion body, etc., all prompted the use of electron microscopy (electron microscopy) to answer these questions. In the superficial pathological study of the cadaver material, sometimes due to inappropriate sample selection, the slice is too small, and the repair block is not allowed or slice loss, can not find the object to be observed, the need