Fig. 3.

A: urea production in total lysates of control RBC or RBC pretreated with 40 μM FP (60 min, 37°C). Incubation was performed for 16 h at 37°C in the presence of increasing concentrations of l-Arg (0.1–5 mM). This is a representative experiment out of 5, made in triplicate. B: mean urea values from 5 paired lysates, cytosols, and ghosts prepared from control and FP samples (40 μM FP, 60 min, 37°C). Incubation was performed for 16 h at 37°C in the presence of 5 mM l-Arg. Paired comparisons were made by Student's t-test.