Figure 3
From: The role of conjunctival biopsy in the diagnosis of granulomatosis with polyangiitis
Histopathology and immunopathology of the conjunctival biopsy. (a) Severe conjunctival inflammation with prominent vasculitis in the deep substantia propria (hematoxylin & eosin, original magnifications: upper left ×100, upper right ×200, lower ×400). (b-d) Strong immunoreactivities to T cells (CD3), B cells (CD20), macrophages (CD68), M2 macrophages (CD163), and costimulatory signal (CD80) (avidin-biotin complex immunohistochemistry, original magnification: ×400).