细胞凋亡(ａｐｏｐｔｏｓｉｓ)是细胞自然生理性死亡,是维持个体组织、器官正常形态结构和功能的重要机制。其特征表现为染色质凝缩,胞浆碎裂,形成凋亡小体及ＤＮＡ断裂。细胞凋亡又称为细胞程序化死亡(ｐｒｏｇｒａｍｍｅｄｃｅｌｌｄｅａｔｈ,ＰＣＤ),前者为形态学上的?.. Apoptosis is the natural physiological death of cells. It is an important mechanism for maintaining the normal morphology and function of individual tissues and organs. It is characterized by chromatin condensation, fragmentation of the cytoplasm, formation of apoptotic bodies, and DNA fragmentation. Apoptosis is also called programmed cell death (PCD). The former is morphological?