Research Article

Gas Chromatography-Triple Quadrupole Mass Spectrometry Analysis and Vasorelaxant Effect of Essential Oil from Protium heptaphyllum (Aubl.) March.

Figure 2

Concentration-response curve showing the vasorelaxant effect of EOPh (a) in endothelium-intact and denuded rat mesenteric rings precontracted with phenylephrine (10 μM) and (b) vasorelaxant effect of verapamil (positive control) in rings of mesenteric artery without endothelium precontracted with phenylephrine. Values are mean ± SEM. versus Phe, Student’s -test ().
(a)
(b)