Expression of AID by tumor cells in PCLBCL, leg type. Neoplastic B cells of primary cutaneous large B-cell lymphoma, leg type, show positive staining for AID protein (original magnification ×40). Images were captured with a Leica DMLB microscope (Leica, Bensheim, Germany), using a Leica PL FLUOTAR objective lens (40×/0.70) and a Leica DC200 camera. Images were directly imported into Power-point (Microsoft, Redmond, WA), using the Leica DC200 camera software (version 2.51).