CD21 (2G9) Mouse Monoclonal Antibody

CD21 (also known as complement receptor 2 (CR2), C3d receptor, or EBV receptor) is a 140 kDa membrane protein on B-lymphocytes to which the Epstein-Barr virus (EBV) binds during infection of these cells. The antigen is absent on T-lymphocytes, monocytes, and granulocytes.
Anti-CD21 is useful in the identification of follicular dendritic cell matrix found in normal lymph nodes and tonsillar tissue. This antibody also labels follicular dendritic cell sarcomas.

Anti-CD21 is valuable in differentiating follicular lymphoma with marginal zone differentiation from marginal zone lymphoma with follicular involvement. It also plays a role in distinguishing among nodular lymphocyte predominant Hodgkin lymphoma, lymphocyte-rich classic Hodgkin lymphoma, and T-cell/histiocyte-rich B-cell lymphoma in combination with other B-cell and T-cell markers.Anti-CD21 is also useful in identifying abnormal follicular dendritic cell pattern in angioimmunoblastic T-cell lymphoma and follicular T-cell lymphoma.

Solution in Tris Buffer, pH 7.3-7.7, with 1% BSA and <0.1% Sodium Azide

Download the IFU specific to your product lot and formatNote: This requires a keycode which can be found on your packaging or product label.

CD21 Positive Control Slides, Product No. 121S, are available for immunohistochemistry (formalin-fixed, paraffin-embedded sections).

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