Figure 4From: Endothelial [Ca2+]i is an integrating signal for the vascular tone in rat aortaeRelationship between EC [Ca2+]i elevation (abscissa) and vascular relaxation (ordinate). Experiments were carried out in the absence of endothelial autacoid inhibitors. Results were taken from the control experiments in Fig. 3. The lines in (a) and (b) were the fitting curves of ACh and ionomycin groups, respectively.Back to article page