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Home >> Antibodies >> CD21 Antibody

CD21 Antibody [clone CR2/6683] (V4772)

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  Catalog No Formulation Size Price (USD)  
Image V4772-100UG 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced), 0.05% sodium azide 100 ug 519
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V4772-20UG 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced), 0.05% sodium azide 20 ug 229
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V4772SAF-100UG 1 mg/ml in 1X PBS; BSA free, sodium azide free 100 ug 519
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IHC staining of FFPE human tonsil tissue with CD21 antibody (clone CR2/6683). HIER: boil tissue sections in pH 9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.
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IHC staining of FFPE human tonsil tissue with CD21 antibody (clone CR2/6683). HIER: boil tissue sections in pH 9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.
Negative control: IHC testing of FFPE human testis tissue with CD21 antibody (clone CR2/6683) at 2ug/ml. HIER: boil tissue sections in pH 9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.
Availability 1-3 business days
Species Reactivity Human
Format Purified
Clonality Monoclonal (mouse origin)
Isotype Mouse IgG2a, kappa
Clone Name CR2/6683
Purity Protein A/G affinity
UniProt P20023
Localization Cell Surface
Applications ELISA (Order BSA-free format for coating) :
Immunohistochemistry (FFPE) : 1-2ug/ml for 30 min at RT
Limitations This CD21 antibody is available for research use only.
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Description

Recognizes a protein of 140kDa, which is identified as the complement receptor 2 (CR2) or CD21. 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.

Application Notes

Optimal dilution of the CD21 antibody should be determined by the researcher.

Immunogen

The human B cell line SB was used as the immunogen for the CD21 antibody.

Storage

Aliquot the CD21 antibody and store frozen at -20oC or colder. Avoid repeated freeze-thaw cycles.

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