1 ) endothelial cells release nitric oxide as a free radical , 2 ) no is solely responsible for the vasodilatory properties of edrf and , 3 ) under in vivo conditions the endogenous formation of no is quantitatively sufficient to influence the coronary vascular tone and thus , may play an important role in the regulation of coronary vascular resistance .
C0016693
free radical
C0028128
edrf