Table 2. SO4= amount ([SO4=] L cells x10-2) trapped by erythrocytes at 45 min of SO4= medium incubation. SO4= amount ([SO4=] L cells x 10-2) trapped by erythrocytes at 45 min of SO4= medium incubation, in control conditions (Mg2+-treated erythrocytes) or in erythrocytes treated with either H2O2 at different concentrations (300-600 µM) or 10 µM DIDS or 10 mM Mg2+ + either 300 µM H2O2 or 600 µM H2O2 or treated with either NEM at different concentrations (0.5, 1 or 2 mM) or 10 mM Mg2+ + either 0.5 mM, 1 mM or 2 mM NEM. Data are presented as means ± SD from separate N experiments, where: ***p<0.001, **p<0.01 *p<0.05 versus control; n.s. not significant versus control; §§p<0.01 versus 300 µM H2O2, §§§p<0.001 versus 600 µM H2O2; °°°p<0.001 versus 0.5 mM, 1 mM or 2 mM NEM respectively