because hyperoxia induces early injury to lung endothelial cells and since tolerance to hyperoxia is correlated with increased lung antioxidant enzyme activity , we measured superoxide dismutase , catalase and glutathione peroxidase in both fresh isolates and primary cultures of endothelial cells from pig pulmonary artery and aorta .
C0225336
endothelial cells
C0014257
endothelial