“…Pentane and ethane, as well as malondialdehyde, are commonly found in A c c e p t e d M a n u s c r i p t 7 human breath and have been shown to correlate with oxidative stress in different clinical settings 49 . Importantly, products of lipid peroxidation are among the most common breath biomarkers of lung cancer 46 . The levels of decane [50][51][52][53][54][55][56][57] , heptanal 50,52,[58][59][60] , octane 51,54,58,61 , and undecane 50,52,57,58,62 have consistently been found to be increased in the breath of patients with lung cancer, compared to controls.…”