Figure 4. B-cell markers were absent in autosomal dominant neovascular inflammatory vitreoretinopathy (ADNIV) eyes. A: Lymph node tissue is a positive control for the B-cell marker, cluster of differentiation-20 (CD20), which was shown by the brown color reaction. B-C: ADNIV supraciliary space and vitreous showed only rare CD20 positive cells. D: Placental tissue is a positive control for immunoglobulin-G (IgG), which was shown by the brown color reaction. E-F: IgG was rarely detected in ADNIV eyes. The scale bar represents 50 µm.