E-cigarette vapour have been found not to induce DNA mutations commonly observed with tobacco smoke exposures using a lab-based method called the Ames test to compare the mutagenic potential of cigarette smoke with that of vapour from a commercially available e-cigarette.

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E-cigarette vapour have been found not to induce DNA mutations commonly observed with tobacco smoke exposures using a lab-based method called the Ames test to compare the mutagenic potential of cigarette smoke with that of vapour from a commercially available e-cigarette.