Fig. 1. The actual recordings of the angiotensin (Ang) II–induced contraction (A ) and change in intracellular Ca2+concentration (B ) of endothelium-denuded rat aortic strips. The aortic strips were treated with the fura-2 solution for 6–9 h at room temperature. The amount of fluorescence in smooth muscle cells was measured in the presence of angiotensin II (10−7m), using a fluorometer. Intracellular Ca2+concentration was indicated as F340:F380.