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Figure 2: (A) H and E staining (200): Section from the pancreas reveals a malignant tumor in sheets. Tumor cells are round to oval in morphology and have prominent nucleoli with scanty cytoplasm. (B) Immunohistochemistry: IHC reveals that the tumor cells express CD20 (B-cell marker)

Figure 2: (A) H and E staining (200): Section from the pancreas reveals a malignant tumor in sheets. Tumor cells are round to oval in morphology and have prominent nucleoli with scanty cytoplasm. (B) Immunohistochemistry: IHC reveals that the tumor cells express CD20 (B-cell marker)