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(A) Hematoxylin-Eosin (HE) staining (×40). (B) Immunohistochemical staining of CD20. Tumor cells in neoplastic follicle were positive for CD20 (×40). (C) Immunohistochemical staining of BCL2. Tumor cells in neoplastic follicle were positive for BCL2 (×40). (D) NS3 positive staining is observed in the neoplastic follicle (×100). (E) Tumor cells were positive for NS3 in the cytoplasm (×600).
