Fig. 2From: Colonic mucosa-associated lymphoid tissue in a renal transplant recipient: a case reporta. CD20 immunostain. The lymphoid infiltrate is composed of CD20-positive B-cells. b. BCL2 immunostain. The lymphoid cells show diffuse positive staining for BCL2 immunostain. Immunoperoxidase stain. Original magnification x40Back to article page