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Figure 5 Plasma levels of endothelin-1 (ET-1) of femoral artery (FA) and femoral vein (FV) and plasma ET-1 extraction in leg before and after the treatments with angiotensin-converting enzyme inhibitors (ACEI). *p < 0.01 vs. the value of ET-1 in FA. Plasma ET-1 extraction in the leg = ET-1 in femoral artery – ET-1 in femoral vein.