肿瘤促生剂（tumor promoters）是一种化学毒素，它能够摧生已受激发的致癌基因。从一项实验的研究，癌细胞的生成常需要有至少两种以上的致癌物之同时作用，单一...
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Most lung cancers are caused by carcinogens and tumor promoters ingested via cigaretter smoking.
大部分肺癌是由吸烟吸入的致癌物质或促癌物质引发的。
Their structures are very similar and they are all potential anti-tumor promoters and cytotoxic agents against tumor cells, inhibiting proliferation, inducing apoptosis and preventing invasion.
它们的结构相似，且都具有抗肿瘤活性，能够抑制肿瘤细胞的增殖、侵袭，并有诱导细胞凋亡的作用，对肿瘤细胞表现出较强的细胞毒活性。
This method proved to be highly accurate in predicting the tumor-specific promoters, with recognition rates of over 90% of the training sequences and over 80% of the testing sequences.
结论该方法具有较高的准确性，在保证对训练集合90%以上的识别率的情况下，对测试集合的识别率达到80%以上。
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