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Figure 4: Effect of betulinic acid (BA, 2.0 μM) on NO level (a) and activity of constitutive nitric oxide synthase (cNOS) (b) in aortas exposed to pyrogallol (500 μM) for 15 min. All data are expressed as mean ± SD; n = 8 aortas from the eight rats per group. **P < 0.01 vs. Con; ##P < 0.01 vs. pyrogallol

Figure 4: Effect of betulinic acid (BA, 2.0 μM) on NO level (a) and activity of constitutive nitric oxide synthase (cNOS) (b) in aortas exposed to pyrogallol (500 μM) for 15 min. All data are expressed as mean ± SD; n = 8 aortas from the eight rats per group. **P < 0.01 vs. Con; ##P < 0.01 vs. pyrogallol