Cigarette smoke activates the parthanatos pathway of cell death in human bronchial epithelial cells Cell Death Discovery Lab study shows cigarette smoke damaged lung cells more than e cigarette vapor Electronic Cigarettes Induce Mitochondrial DNA Damage and Trigger TLR9 (Toll Like Receptor 9) Mediated Atherosclerosis Arteriosclerosis, Thrombosis, and Vascular Biology Comparison of the in vivo genotoxicity of electronic and conventional cigarettes aerosols after subacute, subchronic and chronic exposures. ScienceDirect