Fig. 4
From: The role of HIF-1α-VEGF pathway in bronchiolitis obliterans after lung transplantation
Immunohistochemistry of HIF-1α, VEGF-A and VEGFR-2 in lung grafts or in situ. Protein expression was assessed as positive (a, d and g) or negative (b, c, e, f, h and i) depending on the immunohistochemistry score in different position. Positive immune response group had more brown-staining cells in particular areas than the negative group. The magnification of pictures was 200×. HIF-1α, Hypoxia inducible factor-1α; VEGF-A, vascular endothelial growth factor-A; VEGFR-2, vascular endothelial growth factor receptor-2