Research Article

Endothelium-Independent Vasodilatory Effect of Sailuotong (SLT) on Rat Isolated Tail Artery

Figure 2

Cumulative concentration-response of the SLT extract (0.1–5,000 μg/ml) on phenylephrine (1 μM)-preconstricted rat isolated tail artery with (●) or without (○) the presence of L-NAME (20 μM). Values are expressed as mean ± SEM (n = 6).