Figure 2: Effects of aqueous extract of Zygophyllum album (100 mg/l) on ex vivo production of nitric oxyde (NO) in the aorta, pancreas, liver and heart. The data are expressed as mean ± SD (n = 6). Values are given as mean ± SD for groups of eight animals each. Values are statistically significant at p< 0.05 (*) (test-t of Student).