METHODS: WI 38 cells were divided into 4 groups and randomly added with different concentrations of Rg1. From 30 population doubling (PD), WI 38 cells were exposed to t BHP for 1 h at every two PDs.

• 方法 :将WI 38细胞随机分为 4组 ,用不同剂量Rg1预处理。 从 30代开始 ,隔代用t BHP作用 ,每次 1h ,共 4次 ,诱导细胞衰老。