Levels of cardiac nitrites (A), thiobarbituric acid reactive substances (TBARS, B), Super oxide dismutase (SOD) activities (C), catalase activities (D) and glutathione levels (GSH, E) in the control, ECIG, T-Cig, and WP. *p<0.05, **p<0.01, ****p<0.0001 vs. Control; #p<0.05 vs. ECIGs; $p<0.05 vs. T-Cigs; Dunn’s post hoc test, n=11–15 each group.