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Figure 2 | Respiratory Research

Figure 2

From: Endothelial cell apoptosis in chronically obstructed and reperfused pulmonary artery

Figure 2

A: Proportion of endothelial cells undergoing apoptosis in the distal pulmonary arteries. The proportion increased significantly from 6.6 ± 1.8% in sham animals (S) to 18.9 ± 3.9% 5 weeks after ligation of the left pulmonary artery (L), peaked at 46.4 ± 4.5% 2 days after reperfusion (AR), and returned to 5.4 ± 1.5% 5 weeks after reperfusion (CR). *p < 0.0001 versus sham animals, **p < 0.0001 versus all other groups. S: sham group; L: ligated group; AR: acute reperfusion group; CR: chronic reperfusion group. B: TUNEL staining of endothelial cells in pulmonary artery branches ranging from 20 to 200 μm. Apoptotic cells are yellow (arrows). S: sham group; L: ligated group; AR: acute reperfusion group; CR: chronic reperfusion group.

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