Secondly, the norepinephrine (NE) induced vasoconstriction was antagonized by different concentration of active components of Achyranthes bidentata Blume, and its diastolic level was observed.

• 再用不同浓度的怀牛膝有效成分对抗去甲肾上腺素(NE)引起的血管收缩，观察其舒张程度。