Figure 4.

Effect of enalapril, L-arginine, and oleanolic acid on (a) organ hypertrophy in N^ω-Nitro-L-Arginine Methyl Ester hypertensive rats at the end of 4 weeks. Data represent mean ± standard error ap < 0.05, bp < 0.01 when compared with normal control; αp <0.05, βp <0.01 compared with N^ω-Nitro-L-Arginine Methyl Ester control using one-way analysis of variance followed by Bonferroni as a postanalysis of variance test