Figure 1: The effect of smoking on several biomarkers in human serum of non-smokers (grey bars) and smokers (black bars): ROM (CARR U), TOS (μmol H2O2Eq/L), BAP (μEq/L), FRAP (μmol/L), TAS (mmol/L), TTL (μmol/L), OXY (μmol HClO/mL) and UA (μmol/L). The concentrations of TOS and TAS were multiplied by a factor 200 and 300, respectively, and the concentration of BAP and FRAP were divided by a factor 5 and 3, respectively, to fit in the figure. Statistics: * p<0.05 and ** p<0.025.