Figure 8
From: Synergistic Effect of H2O2 and NO2 in Cell Death Induced by Cold Atmospheric He Plasma

Synergic effect of H2O2 and NOs species on cell viability.
NHSF (A), MRC5Vi (B), Lu1205 (C) and HCT116 (D) cells were untreated (Ctr) or exposed to a mixture of NO2− and NO3−, H2O2 alone, a mixture of H2O2 and NO2− or NO3−, or a mixture of H2O2, NO2− and NO3−. The concentrations of H2O2, NO2− and NO3− were those determined after a He plasma treatment of 2 min at a gas flow of 50 sccm (see Fig. 3). The cell viability assay was performed 24 h post treatment. The data are the mean ± SD of 6 independent experiments. The cell viabilities after an indirect He plasma treatment at a gas flow of 50 sccm are also indicated.