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。

youdao

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.

作者另外还附上了一些实验结果来支撑他们的研究成果，例如，药物的羟肟羟胺酸，它们能够抑制脱乙酰酶，起到类似尼古丁的作用。

youdao

Not only does nicotine have effect on the development of nerve, respiratory and cardiovascular systems, but has a complex interaction with carcinogenesis.

尼古丁参与影响神经系统、呼吸系统和心血管系统等重要器官的发育，并与癌症的发生有着密切的关系。

youdao

Nicotine actually exerts its effect by mimicking a second neurotransmitter called acetylcholine.

ECONOMIST: Great drug, shame about the delivery system | The

Interest has thus focused on drugs that inhibit the breakdown of acetylcholine, and also on nicotine, which works by mimicking its effect.

ECONOMIST: Cognitive enhancement

So why would any official directive aimed at improving health advocate banning, in effect, effective and relatively harmless nicotine-delivery methods that help smokers quit, while allowing the most harmful consumer product cigarettes to keep on killing?

FORBES: The EU's New Tobacco Directive: Protecting Cigarette Markets, Killing Smokers