Figure 1

Sox11 expression in B-cell lymphomas. H&E (left) and immunohistochemical stain for sox11 (right) in representative cases of B-cell lymphomas. Mantle cell lymphoma showed intense homogeneous nuclear staining of sox11 ( × 600) (1a, b). Chronic lymphocytic leukemia/small lymphocytic lymphoma (2a, b), follicular lymphoma (3a, b) and diffuse large B-cell lymphoma (4a, b) displayed variable sox11 staining only in the cytoplasm; the nuclei were completely negative ( × 1000).