Figure 2 :Urine volume collected 24 h in control animals and in the groups treated with L-NAME (40 mg/kg/day) alone or in combination with either L-arginine (100 mg/kg/day) captopril (20 mg/kg/day) or Mammea africana (200 mg/kg/day). n = 6; aP< 0.05, bP< 0.001 signifi cantly different compared to control; á P< 0.05 signifi cantly different compared to L-NAME