- B3B4 (See other available formats)
- Regulatory Status
- Other Names
- FcεRII, IgE Fc Receptor, BLAST-2, Ly-42, B6
- Rat IgG2a, κ
- Ave. Rating
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- Product Citations
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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.Product Details
- Antibody Type
- Host Species
- Complex of IgE with Fcε receptor isolated from the mouse B hybridoma cell line O1.2B2
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
- The antibody was purified by affinity chromatography, and conjugated with PE/Cyanine7 under optimal conditions.
- 0.2 mg/ml
- Storage & Handling
- The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.
FC - Quality tested
- 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 ≤1.0 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.
- Excitation Laser
Blue Laser (488 nm)
Green Laser (532 nm)/Yellow-Green Laser (561 nm)
- 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.
- Additional Product Notes
- BioLegend is in the process of converting the name PE/Cy7 to PE/Cyanine7. The dye molecule remains the same, so you should expect the same quality and performance from our PE/Cyanine7 products. Please contact Technical Service if you have any questions.
- Application References
- Waldschmidt TJ, et al. 1988. J. Immunol. 140:2148. (IP)
- Rao M, et al. 1987. J. Immunol. 138:1845. (Block)
- Oshiba A, et al. 1997. J. Immunol. 159:4056. (Block)
- Dasic G, et al. 1999. Eur. J. Immunol. 29:2957. (Block)
- Maeda K, et al. 1992. J. Immunol. 148:2340. (IHC)
- Craig VJ, et al. 2011. Cancer Res. 71:3616. PubMed
- Product Citations
AB_2103037 (BioLegend Cat. No. 101613)
AB_2103036 (BioLegend Cat. No. 101614)
- C-lectin family, type II transmembrane glycoprotein, 45 kD
B cells, follicular dendritic cells
- Regulates B cell activation
- IgE, CD19/CD21/CD81
- Cell Type
- B cells, Dendritic cells
- Biology Area
- Molecular Family
- CD Molecules, Fc Receptors
- 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.
- Gene ID
- 14128 View all products for this Gene ID
- View information about CD23 on UniProt.org
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