ASIC1 is expressed in mesenteric vascular smooth muscle and endothelial cells. (A) Cross-section of a mesenteric artery showing immunofluorescence of the endothelial marker, CD31 (green), ASIC1 (red), and smooth muscle α-actin (blue). Yellow rectangles represent zoomed-in images to the right. (B and C) The fluorescence intensity profile across the dotted white line shown in A for both individual (B) and merged (C) fluorescence intensity of CD31, SMA, and ASIC1.