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Washington University Experience | NEOPLASMS (HEMATOLYMPHOID) | Lymphoma, primary | 20B1 Lymphoma (Case 20) CD20 1

20B1,2 The tumor cells stain strongly and diffusely positive for the B cell-specific marker CD20 (20B1), and negative for the T cell-specific marker CD3 (20B2) and for GFAP.

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