Figure 3

Sox11 expression in hairy cell leukemia. H&E (left), immunohistochemical stains for cyclin D1 (middle) and sox11 (right) in representative cases of hairy cell leukemia ( × 1000). (1a–c) Hairy cell leukemia positive for nuclear staining of cyclin D1 also showed positive nuclear staining of sox11. (2a–c): Hairy cell leukemia negative for nuclear staining of cyclin D1 was also negative for nuclear staining of sox11. Positive granular staining of sox11 was seen only in the cytoplasm.