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自Mechnikoff发现吞噬细胞后,已经历了一个多世纪。在这期间,人们对它进行了广泛、深入的研究。吞噬细胞是机体内一组重要的防御细胞,主要包括多形核白细胞及单核吞噬细胞,这两类细胞又称职业性吞噬细胞。前者循环在血液系统中,能随时向病原体入侵的部位游出,发挥其功能。后者也存在于血液系统中,但向组织中游出,并固定在各种组织器官中,如肺尘细胞,肝枯否氏细胞等,他们不仅对非特异性能免疫,对特异性免疫也有很重要的作用。
More than a century has passed since Mechnikoff discovered phagocytes. During this period, people conducted extensive and in-depth research on it. Phagocytes are a group of important defensive cells in the body, including polymorphonuclear leukocytes and mononuclear phagocytes, which are also called occupational phagocytes. The former circulates in the blood system and can always move out to the site where the pathogen invades and exert its function. The latter also exists in the blood system, but travels to the tissues and is anchored in a variety of tissues and organs, such as pneumocytes, hepatic kupffer cells and the like, and they are not only immune to nonspecific properties but also have specific immunity Important role.