VG-heavy solvents produce larger vapor clouds, as well as a milder throat hit [18]
Some of these are electronic cigarettes, e-cigs, electronic nicotine delivery systems (ENDS), electronic non-nicotine delivery systems (ENNDS), alternative nicotine delivery systems (ANDS), vape pens and e-hookahs
Compared to places like the US, where flavored cigarettes are generally banned, the flavor options are plentiful
Mature, well-differentiated monolayers of cells were then exposed to control (ultrapure water dissolved in culture medium, water/medium: 2% v/v) or e-cig smoke solution (containing 2 ppm diacetyl, water/medium: 2% v/v) on the apical side for 6 or 24 h (n = 3 subjects, each treatment was performed in duplicate)