Figure 5.

Effect of cumulative concentrations of Teucrium polim extract (1, 2, 4 and 8 mg/ml) on rat aortic rings without endothelium contracted with PE (10⁻⁶ M) in the presence of diltiazem (10⁻⁵ M) (PE + Dil), after heparin (50 mg/l) (PE + Dil + Hp) or ruthenium red (10⁻⁵ M) (PE + Dil + RR) pretreatment. Data are expressed as mean ± SEM (n = 8). *P < 0.05, **P < 0.01, ***P < 0.001 compared to PE + Dil. PE: Phenylephrine; SEM: Standard error of mean