Extracellular Calcium-Dependent Modulation of Endothelium Relaxation in Rat Mesenteric Small Artery: The Role of Potassium Signaling

Figure 3

Repeated ACh concentration-relaxation curves in the presence of 100 μM L-NAME and 3 μM indomethacin (). Relaxations were first performed in the presence of either 1 mM or 2.5 mM ; the bath solution was then replaced with either 2.5 mM or 1 mM . This protocol was repeated once more. indicates for 1 mM versus 2.5 mM for the 1st stimulations; ++ indicates for 1 mM versus 2.5 mM for the 2nd stimulations.