- B3B4 (See other available formats)
- Regulatory Status
- Other Names
- FcεRII, IgE Fc Receptor, BLAST-2, Ly-42, B6
- Rat IgG2a, κ
- Ave. Rating
- Submit a Review
- 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
- Verified Reactivity
- 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 Alexa Fluor® 700 under optimal conditions.
- 0.5 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 ≤0.06 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.
* Alexa Fluor® 700 has a maximum emission of 719 nm when it is excited at 633 nm / 635 nm. Prior to using Alexa Fluor® 700 conjugate for flow cytometric analysis, please verify your flow cytometer's capability of exciting and detecting the fluorochrome.
Alexa Fluor® and Pacific Blue™ are trademarks of Life Technologies Corporation.
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- Excitation Laser
Red Laser (633 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, immunohistochemical staining of acetone-fixed frozen sections5, and spatial biology (IBEX)7,8.
(PubMed link indicates BioLegend citation)
- 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
- Radtke AJ, et al. 2020. Proc Natl Acad Sci U S A. 117:33455-65. (SB) PubMed
- Radtke AJ, et al. 2022. Nat Protoc. 17:378-401. (SB) PubMed
- Product Citations
AB_2687124 (BioLegend Cat. No. 101631)
AB_2687125 (BioLegend Cat. No. 101632)
- 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
Related Pages & Pathways
Other FormatsView All CD23 Reagents Request Custom Conjugation
|Biotin anti-mouse CD23||B3B4||FC|
|FITC anti-mouse CD23||B3B4||FC|
|PE anti-mouse CD23||B3B4||FC|
|Purified anti-mouse CD23||B3B4||FC,IP,Block,IHC-F|
|Alexa Fluor® 488 anti-mouse CD23||B3B4||FC|
|Alexa Fluor® 647 anti-mouse CD23||B3B4||FC,IHC-F,SB|
|PE/Cyanine7 anti-mouse CD23||B3B4||FC|
|Pacific Blue™ anti-mouse CD23||B3B4||FC|
|PerCP/Cyanine5.5 anti-mouse CD23||B3B4||FC|
|APC anti-mouse CD23||B3B4||FC|
|Brilliant Violet 421™ anti-mouse CD23||B3B4||FC|
|Brilliant Violet 510™ anti-mouse CD23||B3B4||FC|
|Purified anti-mouse CD23 (Maxpar® Ready)||B3B4||FC,CyTOF®|
|APC/Cyanine7 anti-mouse CD23||B3B4||FC|
|Alexa Fluor® 700 anti-mouse CD23||B3B4||FC|
|PE/Dazzle™ 594 anti-mouse CD23||B3B4||FC|
|TotalSeq™-A0108 anti-mouse CD23||B3B4||PG|
|Brilliant Violet 605™ anti-mouse CD23||B3B4||FC|
|TotalSeq™-C0108 anti-mouse CD23||B3B4||PG|
|APC/Fire™ 750 anti-mouse CD23 Antibody||B3B4||FC|
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Compare Data Across All Formats
This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
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Biotin anti-mouse CD23
FITC anti-mouse CD23
PE anti-mouse CD23
Purified anti-mouse CD23
Alexa Fluor® 488 anti-mouse CD23
Alexa Fluor® 647 anti-mouse CD23
PE/Cyanine7 anti-mouse CD23
Pacific Blue™ anti-mouse CD23
PerCP/Cyanine5.5 anti-mouse CD23
APC anti-mouse CD23
Brilliant Violet 421™ anti-mouse CD23
Brilliant Violet 510™ anti-mouse CD23
Purified anti-mouse CD23 (Maxpar® Ready)
APC/Cyanine7 anti-mouse CD23
Alexa Fluor® 700 anti-mouse CD23
PE/Dazzle™ 594 anti-mouse CD23
TotalSeq™-A0108 anti-mouse CD23
Brilliant Violet 605™ anti-mouse CD23
TotalSeq™-C0108 anti-mouse CD23
APC/Fire™ 750 anti-mouse CD23 Antibody