Type of antibody:
Primary antibodies
mouse IgG1
Alternative names:

Specifications for CD23 antibodies


M-L23.4 recognizes human CD23, a 45 kDa type II transmembrane glycoprotein that belongs to the immunoglobulin family. It is expressed on most mature B cells, monocytes, follicular dendritic cells, and at low levels on T cells, Langerhans cells, eosinophils, and platelets. CD23 is thought to play a role in the regulation of B cell activation and IgE response. It is up-regulated upon B cell activation. The proteolytic cleavage of membrane CD23 can result in the release of soluble forms of the antigen (sCD23) with a reported biological activity.


Reagent can be used for immunophenotyping by flow cytometry. Abnormal numbers of cells expressing this antigen or aberrant expression levels of the antigen can be expected in some disease states. It is important to understand the normal expression pattern for this antigen and its relationship to expression of other relevant antigens in order to perform appropriate analysis.
Expression of CD23 may be used as aid to diagnostic in the characterization of samples from

Alternative names


Detailed product information

Technical specifications

Isotypemouse IgG1
Type of antibodyPrimary antibodies
Alternative names of antigenBLAST-2, FcεRII
Molecular mass of antigen [kDa]8
Distribution of antigenB cells, dendritic cells, endothelial cells, NK cells, Langerhans cells, macrophages, monocytes, platelets, T cells

Resources for CD23 antibodies


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to download the Certificate of Conformity (CoC) by lot number.

References for CD23 antibodies


  1. Stelzer GT et al. (1997) U.S.-Canadian consensus recommendations on the immunophenotypic analysis of hematologic neoplasia by flow cytometry: standardization and validation of laboratory procedures. Cytometry 30(5): 214-230
  2. Rothe, G et al. (2012) Consensus protocol for the flow cytometric Immunophenotyping of hematopoietic malignancies. Leukemia 10(5): 877-895
  3. van Dongen, J. J. M. et al. (2012) EuroFlow antibody panels for standardized n-dimensional flow cytometric immunophenotyping of normal, reactive and malignant leukocytes. Leukemia 26(9): 1908-1975
  4. Schlossman, S.F. et al. (1993) Leukocyte Typing V. Oxford, Oxford University Press
  5. Clinical and Laboratory Standards Institute (CLSI) (2007) Clinical Flow Cytometric Analysis of Neoplastic Hematolympoid Cells, CLSI document H43-A2 (ISBN 1-56238-635-2) CLSI; Approved Guideline - Second Edition
  6. Clinical and Laboratory Standards Institute (CLSI) (2007) Enumeration of immunologically defined cell populations by flow cytometry, CLSI document H42-A2 (ISBN 1-56238-640-9) CLSI; Approved Guideline - Second Edition
  7. Wood BL et al. (2007) 2006 Bethesda International Consensus recommendations on the immunophenotypic analysis of hematolymphoid neoplasia by flow cytometry: optimal reagents and reporting for the flow cytometric diagnosis of hematopoietic neoplasia. Cytometry B Clin. Cytom. 72: 14-22

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