Similar proteins are known to flag cells in the lining of the midgut of insects as being damaged , triggering a process of cell death called apoptosis .
有几种相似的蛋白质能标记受到伤害的昆虫中肠内壁细胞,从而引起细胞凋亡。
The ones who were deprived of antioxidants had smaller tumors , and 20 percent of the tumor cells were undergoing a type of cell death called apoptosis , which is fueled by free radicals .