本文在前人的基础上研究了不同卷烟主流烟气的细胞毒性及致突变性，现总结实验结果如下：1。
On the basis of former studies, this paper studies on cytotoxicity and mutagenicity of different mainstream cigarette smoke, the main experimental results are as follows: 1.
研究的下一步是总结实验室癌细胞试验的结果并进行小鼠试验。
The next step of the research will take the results from experiments of cancer cells in laboratories and test them on mice.
研究的下一步是总结实验室癌细胞试验的结果并进行小鼠试验。
The next step of the research will take the results from experiments of cancer cells in laboratories and test them on mice.
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