Figure 8. Immunochemistry of apelin in an iris. Sections of iris were examined by immunohistochemistry with anti-apelin antibody. Positive staining (brown) of apelin was detected in iris vessel walls in the central retinal vein occlusion groups (A: group “1 w,” B: group “2 w,” C: group “24 w”), and there was no obvious positive staining in the intravitreal bevacizumab (IVB) groups (D: group “1 w+IVB,” E: group “2 w+IVB,” F: group “24 w+IVB”).