To examine the dose/time-effect relationship of cytotoxicity of cadmium to human embryo nephridium cell (293 cell) and observe the effect of co-exposure to cadmium and zinc.

• 分析镉对肾细胞毒作用的剂量-效应关系和时间-效应关系,并观察锌对镉所致损伤的保护作用。[方法]实验采用人胚肾细胞(293细胞),设对照组、锌组、镉组、镉+锌组。