内含体为由于病毒感染而产生的细胞内结构。这些结构包括病毒粒体与病毒有关的物质以及处于正常或退化状态的普通细胞组份,或者只包含一种,更多的则是包含不同比率的多种(Martelli 和 Russo.1977)。内含体的存在形式变化可从无定形结构到有明确规格的晶体结构;有些大到在光学显微镜下可见,另一些则仅可借助于电子显微镜 The inclusion body is an intracellular structure resulting from a viral infection. These structures include viral particles and virus-related substances as well as ordinary cellular components in normal or degenerated conditions, or only one, and more often in varying ratios (Martelli and Russo. 1977). The inclusion bodies vary in their form from amorphous to well-defined crystalline structures; some are large enough to be visible under optical microscopes and others only with the aid of electron microscopy