FITC Plus Anti-Human CD21 (BU32)

CD21 Monoclonal Antibody for FC

Host / Isotype

Mouse / IgG1, kappa






FITC Plus Fluorescent Dye



Cat no : FITC-65198


C3DR, CD21, Complement C3d receptor, Complement receptor type 2, CR2, EBV receptor, Epstein Barr virus receptor, SLEB9

Tested Applications

Positive FC detected inhuman PBMCs

Recommended dilution

This reagent has been pre-titrated and tested for flow cytometric analysis. The suggested use of this reagent is 5 μl per 10^6 cells in a 100 µl suspension or 5 μl per 100 µl of whole blood.
Sample-dependent, Check data in validation data gallery.

Product Information

FITC-65198 targets CD21 in FC applications and shows reactivity with Human samples.

Tested Reactivity Human
Host / Isotype Mouse / IgG1, kappa
Class Monoclonal
Type Antibody
Immunogen N/A
Full Name complement component (3d/Epstein Barr virus) receptor 2
Calculated Molecular Weight 1092 aa, 119 kDa
GenBank Accession NumberBC136394
Gene Symbol CR2
Gene ID (NCBI) 1380
Conjugate FITC Plus Fluorescent Dye
Excitation/Emission Maxima Wavelengths495 nm / 524 nm
Form Liquid
Purification MethodProtein G purification
Storage Buffer PBS with 0.09% sodium azide and 0.5% BSA.
Storage ConditionsStore at 2-8°C. Avoid exposure to light. Stable for one year after shipment.

Background Information

CD21, also known as complement receptor type 2 (CR2), complement C3d receptor, and Epstein-Barr virus receptor, is a transmembrane protein that contains a small cytoplasmic domain, a transmembrane region and an extracellular domain consisting of 15 tandem short consensus repeat sequences (PMID: 6230668; 2551147). It is expressed on B cells, follicular dendritic cells, thymocytes and a subset of peripheral T cells (PMID: 26119182). CD21 binds complement fragments C3d, C3dg and iC3b and acts as a receptor for the Epstein-Barr virus (PMID: 7753047). On B cells, together with CD19 and CD81, CD21 forms a complex that functions as a co-receptor to the BCR (PMID: 7542009). It is involved in B cells activation and functions.


Product Specific Protocols
FC protocol for FITC Plus CD21 antibody FITC-65198Download protocol
Standard Protocols
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