Fig. 7. Expression levels of tyrosine kinase (Syk) measured in untreated erythrocytes or in Mg²⁺-treated erythrocytes (control) or in erythrocytes treated with either 300 μM, or 600 μM or 1 mM H₂O₂ (A), or with 10 mM Mg²⁺ + either 300 µM, or 600 µM or 1 mM H₂O₂ treatment (B), detected by Western blot analysis. 10 mM Mg²⁺ n.s. not significant versus untreated erythrocytes; **p<0.01 versus control, 10 mM Mg²⁺ + either 300 µM, or 600 µM or 1 mM H₂O₂ n.s. not significant versus 300 μM, or 600 μM or 1 mM H₂O₂.