A. ERO1 and VCAM1 expression in HAECs transfected with control siRNA (Ctrlsi) and ERO1 siRNA (ERO1si) and exposed to hypoxia for 24 h. For the densitometric analysis, ERO1 and VCAM1 were corrected by β-actin. *P<0.05, vs. Ctrlsi, #P<0.05 vs. normoxia, n=3. B. Macrophage adhesion to WT ECs, which have been transfected with control siRNA (Ctrlsi) or ERO1 siRNA (ERO1si) and exposed to hypoxia for 24 h. The number of macrophages attached to ECs was counted with Image J. *P<0.05, vs. Ctrlsi, n=3.