Methods Human embryo lung cells (MRC 9 and IMR 90) were transformed by water insoluble nickel oxide and nickel subsulfide, and changes in cell cycle of these transformed cells were analyzed by flow cytometric technique.

• 方法 用水不溶性氧化镍和二硫化三镍体外转化人胚肺细胞 (MRC 9和IMR 90 ) ,并用流式细胞术分析这些转化细胞的细胞周期改变。