Nicotine addiction letting a person, but tar is in cigarettes true in induced carcinoma and promote cancer process has some effect.
烟碱让人成瘾，但焦油才是香烟中真正的，在诱癌和促癌过程中都起到了一定的作用。
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The authors backed up their results with additional experiments showing, for example, that the drug suberoylanilide hydroxamine acid, which inhibits deacetylases, simulates the effect of nicotine.
Not only does nicotine have effect on the development of nerve, respiratory and cardiovascular systems, but has a complex interaction with carcinogenesis.