Fig. 6.

Effect of SOD on pre- and post-Cu²⁺ DEA/NO-derived NO peaks in the presence of GSH. NO peak heights were determined from traces as in Fig. 1. Experimental conditions: 1 µM DEA/NO, 1 mM GSH, 4 mM CuSO₄, 1000 U/ml SOD as indicated, 0.1 mM DTPA, 5 mM MgCl₂, and 50 mM TEA (pH 7.4) in 0.5 ml at 37 °C; n≥6.