omparative effect of post-treatment with resveratrol (RSV) or methylene blue (MET) on methemoglobin formation induced by DDS-NHOH.\ Erythrocytes were incubated for 0 h with DDS-NHOH (0.0 μg/mL), then these cells were incubated with RSV (000μM) for 0 h or MET(00 nM). 