In the experiment the method of main drug MNNG and therelated factors not only simulate the etiology in human, but also shorten the time, increase the rate of DYS and the model is equable.

• 本实验以MNNG为主要工具药,结合胃癌前病变其它相关因素联合攻击的方法,不仅模拟了人的患病因素,而且缩短了实验周期,不典型增生率高,模型稳定,不失为一种较理想的制造胃癌前病变模型的方法。