Figure 4From: Endothelial cell apoptosis in chronically obstructed and reperfused pulmonary arteryPercent reduction of maximal contraction to phenylephrine produced by acetylcholine stimulation and calcium ionophore stimulation of pulmonary artery rings taken from the left lungs of sham animals (S), animals with chronic ischemia (left pulmonary artery ligation for 5 weeks, L), and animals with acute reperfusion (revascularisation 2 days earlier, after ligation for 5 weeks, AR).Back to article page