Martentoxin, a large-conductance Ca(2+)-activated K(+) channel inhibitor, attenuated TNF-α-induced nitric oxide release by human umbilical vein endothelial cells.

Martentoxin, a large-conductance Ca(2+)-activated K(+) channel inhibitor, attenuated TNF-α-induced nitric oxide release by human umbilical vein endothelial cells.