Endothelium-derived relaxing factor
(重定向自EDRF)
Endothelium-derived relaxing factor (EDRF) is produced and released by the endothelium to promote smooth muscle relaxation. The best-characterized is nitric oxide (NO). Some sources equate EDRF and nitric oxide.
It is released in response to a variety of chemical and physical stimuli. It causes the smooth muscle in the vessel wall to relax.