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Figure 1 Impact of renin-angiotensin system inhibition on interleukin-10 (IL-10). Patients were treated for 3 months with either 20 mg enalapril (ENAL, white bars) or 300 mg of irbesartan (IRB, black bars); IL-10 serum concentrations were determined by enzyme-linked immunosorbent assay technique at baseline and at 3 months. Data represent mean ± SEM.