Chronic E Cigarette Use Impairs Endothelial Function on the Physiological and Cellular Levels Arteriosclerosis, Thrombosis, and Vascular Biology What is Nicotine? TACO Inc Relations among cigarette dependence, e cigarette dependence, and key dependence criteria among dual users of combustible and e cigarettes. NIH funded studies show damaging effects of vaping, smoking on blood vessels National Institutes of Health (NIH) An Open Label, Randomized, Crossover Study to Assess Nicotine Uptake, Tobacco Related Biomarkers of Exposure, Biomarkers of Pot