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Effect of delayed addition of redox buffer on the reactivation of dr-API in presence of PDI. Reactivation of 1 μM dr-API in the absence of PDI and redox buffer (circles), in the presence of 10 μM PDI (down-pointing triangles), and after the delayed addition of redox buffer (up-pointing triangles). The arrow indicates the time of addition of redox buffer. The data are expressed as mean ± SD (n = 3 to 5).
