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Alexa Fluor® 700 Mouse Anti-Human CD23
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Alexa Fluor® 700 Mouse Anti-Human CD23
Two-color flow cytometric analysis of CD23 expression on human peripheral blood lymphocytes.  Whole blood was stained with BD Horizon™ PE-CF594 Mouse Anti-Human CD19 antibody (Cat. No. 562294/562321) and either Alexa Fluor® 700 Mouse IgG1, κ Isotype Control (Cat. No. 557882; Left Panel) or Alexa Fluor® 700 Mouse Anti-Human CD23 antibody (Cat. No. 563673; Right Panel). The erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). Two-color flow cytometric dot plots show the correlated expression patterns of CD23 (or Ig isotype control staining) versus CD19 for gated events with the forward and side light-scatter characteristics of intact lymphocytes. Flow cytometric analysis was performed using a BD™ LSR II Flow Cytometer System.
Two-color flow cytometric analysis of CD23 expression on human peripheral blood lymphocytes.  Whole blood was stained with BD Horizon™ PE-CF594 Mouse Anti-Human CD19 antibody (Cat. No. 562294/562321) and either Alexa Fluor® 700 Mouse IgG1, κ Isotype Control (Cat. No. 557882; Left Panel) or Alexa Fluor® 700 Mouse Anti-Human CD23 antibody (Cat. No. 563673; Right Panel). The erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). Two-color flow cytometric dot plots show the correlated expression patterns of CD23 (or Ig isotype control staining) versus CD19 for gated events with the forward and side light-scatter characteristics of intact lymphocytes. Flow cytometric analysis was performed using a BD™ LSR II Flow Cytometer System.
Product Details
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BD Pharmingen™
FCER2; FcεRII; Low affinity immunoglobulin epsilon Fc receptor; BLAST-2
Human (QC Testing)
Mouse IgG1, κ
Flow cytometry (Routinely Tested)
5 µl
V CD23.15
AB_2738365
Aqueous buffered solution containing protein stabilizer and ≤0.09% sodium azide.
RUO


Preparation And Storage

Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated to Alexa Fluor® 700 under optimum conditions, and unreacted Alexa Fluor® 700 was removed.

Product Notices

  1. This reagent has been pre-diluted for use at the recommended Volume per Test. We typically use 1 × 10^6 cells in a 100-µl experimental sample (a test).
  2. An isotype control should be used at the same concentration as the antibody of interest.
  3. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
  4. The Alexa Fluor®, Pacific Blue™, and Cascade Blue® dye antibody conjugates in this product are sold under license from Molecular Probes, Inc. for research use only, excluding use in combination with microarrays, or as analyte specific reagents. The Alexa Fluor® dyes (except for Alexa Fluor® 430), Pacific Blue™ dye, and Cascade Blue® dye are covered by pending and issued patents.
  5. Alexa Fluor® 700 has an adsorption maximum of ~700nm and a peak fluorescence emission of ~720nm. Before staining cells with this reagent, please confirm that your flow cytometer is capable of exciting the fluorochrome and discriminating the resulting fluorescence.
  6. Alexa Fluor® is a registered trademark of Molecular Probes, Inc., Eugene, OR.
  7. CF™ is a trademark of Biotium, Inc.
  8. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
  9. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
563673 Rev. 1
Antibody Details
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M-L233

The M-L233 antibody specifically binds to human CD23, the low affinity receptor for human IgE (FcεRII). CD23 is a type II membrane glycoprotein that is expressed by B cells, monocytes, macrophages, eosinophils, platelets and dendritic cells. CD23 mediates IgE-dependent cytotoxicity and phagocytosis by macrophages and eosinophils. Soluble CD23 (sCD23) can be released by CD23-positive cells as a result of proteolytic cleavage of membrane CD23. Larger fragments of sCD23 (e.g., 25-37 kDa) retain their IgE-binding capacity whereas smaller fragments (ie, ≤ 12 kDa) do not. Soluble CD23 may have immunoregulatory effects on the growth and differentiation of B cells and other cell types.

563673 Rev. 1
Format Details
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Alexa Fluor™ 700
Alexa Fluor™ 700 dye is part of the BD red family of dyes. This is a small organic fluorochrome with an excitation maximum (Ex Max) at 697 nm and an emission maximum (Em Max) at 719-nm. Alexa Fluor™ 700 is designed to be excited by the Red (627–640-nm) laser and detected using an optical filter centered near 720-nm (e.g., a 720/40-nm bandpass filter). Please ensure that your instrument’s configurations (lasers and optical filters) are appropriate for this dye.
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Alexa Fluor™ 700
Red 627-640 nm
697 nm
719 nm
563673 Rev.1
Citations & References
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Development References (5)

  1. Belleau JT, Gandhi RK, McPherson HM, Lew DB. Research upregulation of CD23 (FcepsilonRII) expression in human airway smooth muscle cells (huASMC) in response to IL-4, GM-CSF, and IL-4/GM-CSF. Clin Mol Allergy. 2005; 3(6):1-12. (Clone-specific: Flow cytometry, Fluorescence microscopy, Immunofluorescence, Western blot). View Reference
  2. Delespesse G, Hofstetter H, Sarfati M. Low-affinity receptor for IgE (FcERII, CD23) and its soluble fragments. Int Arch Allergy Immunol. 1989; 90(1):41-44. (Biology). View Reference
  3. Gordon J, Millsum MJ, Flores-Romo L, Gillis S. Regulation of resting and cycling human B lymphocytes via surface IgM and the accessory molecules interleukin-4, CD23 and CD40. Immunology. 1989; 68(4):526-531. (Biology). View Reference
  4. Saeland S, Duvert V, Moreau I, Banchereau J. Human B cell precursors proliferate and express CD23 after CD40 ligation. J Exp Med. 1993; 178(1):113-120. (Biology). View Reference
  5. Schlossman SF. Stuart F. Schlossman .. et al., ed. Leucocyte typing V : white cell differentiation antigens : proceedings of the fifth international workshop and conference held in Boston, USA, 3-7 November, 1993. Oxford: Oxford University Press; 1995.
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563673 Rev. 1

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Global - Refer to manufacturer's instructions for use and related User Manuals and Technical data sheets before using this products as described


Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims.  Comparisons are not made against non-BD technologies, unless otherwise noted.

For Research Use Only. Not for use in diagnostic or therapeutic procedures.