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Figure 3 | BMC Complementary and Alternative Medicine

Figure 3

From: Polygonum viviparum L. induces vasorelaxation in the rat thoracic aorta via activation of nitric oxide synthase in endothelial cells

Figure 3

Polygonum viviparum (PV) promoted an increase in nitric oxide (NO) production by human umbilical vein endothelial cells (HUVECs). Cells were treated with 3, 10, 30, and 100 μg/ml PV for 1 h. Medium was then collected for NO detection using the Griess reagent. Data are expressed as the mean ± standard error of the mean (S.E.M.) for more than 5 individual determinations. Treatment with acetylcholine (ACh) was used as a positive control. * p < 0.05, ** p < 0.01, significantly different from the control.

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