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Biotin Rat Anti-Human GM-CSF
Product Details
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BD Pharmingen™
CSF2; Colony stimulating factor 2 (granulocyte-macrophage); CSF; GMCSF
Human (QC Testing)
Rat LEW, also known as Lewis IgG2a
Recombinant human GM-CSF
ELISA Detection (Routinely Tested), Flow cytometry (Tested During Development), Immunoprecipitation/Western blot (Reported)
0.5 mg/ml
Aqueous buffered solution containing ≤0.09% sodium azide.

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 with biotin under optimum conditions, and unreacted biotin was removed.

Recommended Assay Procedures

ELISA Detection: The biotinylated BVD2-21C11 antibody (Cat. No. 554505) is useful as a detection antibody in a sandwich ELISA for measuring human GM-CSF protein levels.  Biotinylated BVD2-21C11 antibody can be paired with the purified BVD2-23B6 antibody (Cat. No. 554502) as the capture antibody, with recombinant human GM-CSF (Cat. No. 550068) as the standard. This detecting antibody preparation should be titrated from 0.5 - 2.0 µg/ml to determine its optimal concentration for ELISA detection. To obtain linear standard curves, doubling dilutions of GM-CSF protein ranging from ~15 to 2,000 pg/ml are recommended for inclusion in each ELISA plate. For specific methodology, please visit our web site,, and go to the protocols section or the chapter on ELISA in the Immune Function Handbook.

This ELISA pair shows no cross-reactivity with any of the cytokines tested (e.g., mouse IL-1β, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-9, IL-10, IL-12 p70, IL-15, GM-CSF, IFN-γ, MCP-1, TCA-3, TNF; human IL-1α, IL-1β, IL-2, IL-3, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL-11, IL-12 p70, IL- 12 p40, IL-13, IL-15, G-CSF, IFN-γ, lymphotactin, MCP-1, MCP-2, MIP-1α, MIP-1β, NT-3, PDGF-AA, sCD23 , SCF, TNF, LT-α, VEGF; rat IL-2, IL-4, IL-6, IL-10, GM-CSF, IFN-γ, TNF).

This ELISA pair is recommended primarily for measuring cytokine from experimental cell culture systems. These ELISA reagents are not recommended for assay of serum samples. For testing human GM-CSF in complex biological fluids such as serum or plasma, our human GM-CSF OptEIA™ ELISA Set (Cat. No. 555126) is recommended.

IF/Flow: The BVD2-21C11 antibody useful for immunofluorescent staining and flow cytometric analysis to identify and enumerate GM-CSF producing cells within mixed cell populations. The PE-conjugated BVD2-21C11 antibody (Cat. No. 554507) is especially suitable for these studies.  We also offer Alexa Fluor® 647 (Cat. No. 5622570) and PerCp-Cy™5.5 (Cat. No. 562258) formats.

IP/WB: The BVD2-21C11 antibody has been reported to be useful for immunoprecipitation studies.  Please note that this application is not routinely tested at BD Biosciences Pharmingen.

Product Notices

  1. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
  2. Please refer to for technical protocols.
  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.
554505 Rev. 2
Antibody Details
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The BVD2-21C11 monoclonal antibody specifically binds to human Granulocyte/Macrophage - Colony Stimulating Factor (GM-CSF). Human GM-CSF is encoded by the CSF2 gene and is also known as Colony Stimulating Factor 2.  GM-CSF is produced by activated T lymphocytes, macrophages, endothelial cells, fibroblasts, stromal cells and other cell types including B lymphocytes, mast cells, eosinophils, and osteoblasts.  GM-CSF stimulates the survival, proliferation and/or differentiation of various cell types including neutrophils, eosinophils, macrophages, dendritic cells, megakaryocytes, erythroid cells, endothelial cells and their precursors. The immunogen used to generate the BVD2-21C11 hybridoma was recombinant human GM-CSF. The BVD2-21C11 antibody has been reported to crossreact with GM-CSF from the rhesus monkey. BVD2-21C11 is a neutralizing antibody.

554505 Rev. 2
Format Details
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Biotin is a ubiquitous co-factor (also known as Vitamin B7) that has many properties that make it extremely useful for molecular biology. Biotin has an extremely high affinity for the Avidin family of proteins (Kd = 10-15 M), making it the perfect tool to link two molecules. Biotin labeled antibodies can be combined with any number of Avidin-conjugated probes in order to customize an assay to a particular need. This is especially useful in the case of magnetic cell separation using streptavidin/magnetic bead conjugates, or in the case of flow cytometry using streptavidin/fluorophore conjugates.
554505 Rev.2
Citations & References
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Development References (4)

  1. Abrams J. Immunoenzymetric assay of mouse and human cytokines using NIP-labeled anti-cytokine antibodies. Curr Protoc Immunol. 2001; 1:6.20-6.21. (Clone-specific: ELISA). View Reference
  2. Abrams JS, Roncarolo MG, Yssel H, Andersson U, Gleich GJ, Silver JE. Strategies of anti-cytokine monoclonal antibody development: immunoassay of IL-10 and IL-5 in clinical samples. Immunol Rev. 1992; 127:5-24. (Clone-specific: ELISA, Immunoprecipitation). View Reference
  3. Bacchetta R, de Waal Malefijt R, Yssel H. Host-reactive CD4+ and CD8+ T cell clones isolated from a human chimera produce IL-5, IL-2, IFN-gamma and granulocyte/macrophage-colony-stimulating factor but not IL-4. J Immunol. 1990; 144(3):902-908. (Clone-specific: ELISA). View Reference
  4. Kita H, Ohnishi T, Okubo Y, Weiler D, Abrams JS, Gleich GJ. Granulocyte/macrophage colony-stimulating factor and interleukin 3 release from human peripheral blood eosinophils and neutrophils. J Exp Med. 1991; 174(3):745-748. (Clone-specific: ELISA). View Reference
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554505 Rev. 2

Please refer to Support Documents for Quality Certificates

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.

Refer to manufacturer's instructions for use and related User Manuals and Technical Data Sheets before using this product 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.