Concentration response curves for (A) phenylephrine, an α-adrenergic agonist, (B) U46619, a thromboxane mimetic, and (C) BAY K 8644, an L-type calcium channel activator in aortic rings from WT and KO mice. n=6-9 per experimental group. #p<0.01 using 2-way RM-ANOVA, *p<0.05, **p<0.01, and ***p<0.001 using the Holm-Sidak method for multiple comparison.