Clara细胞是衬覆于远端细支气管的非纤毛上皮细胞 ,具有非粘液非浆液性分泌特性。已证实Clara细胞具有分泌、生物转化、前体细胞作用、离子主动转运等多种功能 ,在器官保护、气道上皮更新和损伤修复、外源性化学物质的生物转化及远端气道液体平衡调节等方面发挥重要的生理作用 Clara cells are non-ciliated epithelial cells lining the distal bronchioles with non-mucinous non-serous secretory properties. It has been demonstrated that Clara cells have various functions such as secretion, biotransformation, progenitor cell action and active ion transport. They play important roles in organ protection, airway epithelium renewal and injury repair, biotransformation of exogenous chemical substances and distal airway fluid balance Regulation and other aspects play an important physiological role