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细胞凋亡是机体发育和组织更新过程中清除细胞的主要途径 ,我们采用脱氧核糖核酸末端转移酶介导的缺口末端标记 (ＴＵＮＥＬ)技术及免疫组织化学染色对正常胃粘膜、萎缩性胃炎、肠化生、异型增生及胃癌组织中的凋亡细胞和ｂｃｌ-２蛋白表达状态进行观察和比较 ,以期了解它们在
Apoptosis is the main way to eliminate cells during development and tissue regeneration. We use nick end labeling (TUNEL) mediated by DNA terminal transferase and immunohistochemical staining for normal gastric mucosa, atrophic gastritis, and intestine. Observe and compare the expression status of apoptotic cells and bcl-2 protein in metaplastic, dysplasia and gastric cancer tissues in order to understand them