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Figure 4 Serial changes in the plasma levels of monocyte chemoattractant protein-1 (MCP-1) antigen in patients treated with enalapril and placebo (mean ± SEM). Solid circle = enalapril; open circle = placebo. *p < 0.05 vs. before administration; p < 0.01 vs. placebo; p < 0.05 vs. placebo.