Fig. 7From: Role of airway smooth muscle cell phenotypes in airway tone and obstruction in guinea pig asthma modelRepresentative recording showing the changes in intracellular Ca2+ levels ([Ca2+]i) induced by caffeine (10 mM) in myocytes isolated from control (red) and asthma model guinea pigs (blue). The withdrawal of caffeine induced a Ca2+ undershootBack to article page