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Safety Data Sheet (SDS) Biotin Anti-mouse CD23 Antibody     Product Data Sheet (PDF)    
Biotin Anti-mouse CD23 Antibody
1108015 50 µg $75.00       
1108020 500 µg $225.00       
Clone: B3B4
Isotype: Rat IgG2a, κ
Reactivity: Mouse
Immunogen: Complex of IgE with Fcε receptor isolated from the mouse B hybridoma cell line O1.2B2
Formulation: Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
Preparation: The antibody was purified by affinity chromatography, and conjugated with biotin under optimal conditions. The solution is free of unconjugated biotin.
Concentration: 0.5 mg/ml
Storage & Handling: The antibody solution should be stored undiluted between 2°C and 8°C. Do not freeze.
Application:

FC - Quality tested
IF - Reported in the literature

Application Notes:

The B3B4 antibody is useful for blocking IgE activity in vivo. Additional reported applications (for the relevant formats) include: immunoprecipitation1, immunofluorescence microscopy, in vitro and in vivo blocking of ligand binding2-4, and immunohistochemical staining of acetone-fixed frozen sections5.

Recommended Usage: Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤ 0.25 µg per 106 cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for other applications.
Application References:

1. Waldschmidt TJ, et al. 1988. J. Immunol. 140:2148. (IP)
2. Rao M, et al. 1987. J. Immunol. 138:1845. (Block)
3. Oshiba A, et al. 1997. J. Immunol. 159:4056. (Block)
4. Dasic G, et al. 1999. Eur. J. Immunol. 29:2957. (Block)
5. Maeda K, et al. 1992. J. Immunol. 148:2340. (IHC)
6. Craig VJ, et al. 2011. Cancer Res. 71:3616. PubMed

C57BL/6 mouse splenocytes were stained

C57BL/6 mouse splenocytes were stained with biotinylated CD23 (clone B3B4) (filled histogram), or biotinylated rat IgG2a, κ (open histogram), followed by Sav-PE.



Description:

CD23 is a 45 kD protein also known as low affinity IgE Fc receptor, FcεRII, BLAST-2, Ly-42, or B6. It is a member of the Ig family, expressed on conventional B (but not B-1) cells and follicular dendritic cells. CD23 responds to high levels of IgE by downregulating IgE secretion.

Other Names: FcεRII, IgE Fc Receptor, BLAST-2, Ly-42, B6
Structure: C-lectin family, type II transmembrane glycoprotein, 45 kD
Distribution: B cells, follicular dendritic cells
Function: Regulates B cell activation
Ligand Receptor: IgE, CD19/CD21/CD81
Antigen References:

1. Barclay A, et al. 1997. The Leukocyte Antigen FactsBook Academic Press.
2. Delespesse G, et al. 1992. Immunol. Rev. 125:77.
3. Flores-Romo L, et al. 1993. Science 261:1038.