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Catalog Number | orb606540 |
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Category | Antibodies |
Description | Recognizes a protein of 140kDa, which is identified as the complement receptor 2 (CR2)/CD21. Its epitope is located in 5-8 short consensus repeats (SCRs). This mAb is highly specific to CR2 and shows no cross-reaction with CR1. This protein is expressed strongly on mature B cells, follicular dendritic cells and weakly on immature thymocytes and T lymphocytes. In B-cell ontogeny, CD21 appears after the pre-B-stage, is maintained during peripheral B-cell development and is lost upon terminal differentiation into plasma cells. CD21 expression is also gradually lost after stimulation of B cells in vitro. CD21 functions as receptor for C3d, C3dg and iC3b Complement components, for EBV and for IFNalpha. CD21 binds to CD23 and associates with CD19, CD81 and Leu13 to form a large signal-transduction complex involved in B cell activation. |
Species/Host | Mouse |
Clonality | Monoclonal |
Clone Number | CR2/1952 |
Tested applications | ELISA, IHC-P |
Reactivity | Human |
Isotype | Mouse IgG1, kappa |
Immunogen | A portion of amino acids 44-196 were used as the immunogen for the CD21 antibody. |
Dilution range | ELISA (order BSA/sodium azide-free format for coating),Immunohistochemistry (FFPE): 1-2ug/ml for 30 min at RT |
Purity | Protein G affinity chromatography |
Conjugation | Unconjugated |
Formula | 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced) and 0.05% sodium azide |
Hazard Information | This CD21 antibody is available for research use only. |
UniProt ID | P20023 |
Storage | Store the CD21 antibody at 2-8°C (with azide) or aliquot and store at -20°C or colder (without azide). |
Buffer/Preservatives | 0.2 mg/ml in 1X PBS with 0.1 mg/ml rAlbumin (US sourced) and 0.05% sodium azide |
Note | For research use only |
Application notes | Optimal dilution of the CD21 antibody should be determined by the researcher. |
Expiration Date | 12 months from date of receipt. |
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