Preparation And Storage
Recommended Assay Procedures
BD® CompBeads can be used as surrogates to assess fluorescence spillover (compensation). When fluorochrome conjugated antibodies are bound to BD® CompBeads, they have spectral properties very similar to cells. However, for some fluorochromes there can be small differences in spectral emissions compared to cells, resulting in spillover values that differ when compared to biological controls. It is strongly recommended that when using a reagent for the first time, users compare the spillover on cells and BD® CompBeads to ensure that BD® CompBeads are appropriate for your specific cellular application.
Product Notices
- When using high concentrations of antibody, background binding of this dye to erythroid fragments produced by ammonium chloride-based lysis, such as with BD Pharm Lyse™ Lysing Buffer (Cat. No. 555899), has been observed when the antibody conjugate was present during the lysis procedure. This may cause nonspecific staining of target cells, such as leukocytes, which have bound the resulting erythroid fragments. This background can be mitigated by any of the following: titrating the antibody conjugate to a lower concentration, fixing samples with formaldehyde, or removing erythrocytes before staining (eg, gradient centrifugation or pre-lysis with wash). This background has not been observed when cells were lysed with BD FACS™ Lysing Solution (Cat. No. 349202) after staining.
- The production process underwent stringent testing and validation to assure that it generates a high-quality conjugate with consistent performance and specific binding activity. However, verification testing has not been performed on all conjugate lots.
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
- Since applications vary, each investigator should titrate the reagent to obtain optimal results.
- An isotype control should be used at the same concentration as the antibody of interest.
- Please observe the following precautions: We recommend that special precautions be taken (such as wrapping vials, tubes, or racks in aluminum foil) to protect exposure of conjugated reagents, including cells stained with those reagents, to any room illumination. Absorption of visible light can significantly affect the emission spectra and quantum yield of tandem fluorochrome conjugates.
- 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.
- For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
- Human donor specific background has been observed in relation to the presence of anti-polyethylene glycol (PEG) antibodies, developed as a result of certain vaccines containing PEG, including some COVID-19 vaccines. We recommend use of BD Horizon Brilliant™ Stain Buffer in your experiments to help mitigate potential background. For more information visit https://www.bdbiosciences.com/en-us/support/product-notices.
- Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
- Cy is a trademark of Global Life Sciences Solutions Germany GmbH or an affiliate doing business as Cytiva.
- For U.S. patents that may apply, see bd.com/patents.
Companion Products
The AMKB1-2 monoclonal antibody specifically recognizes the variable beta 9 region of the β subunit of the human αβ T cell receptor for antigen (TCR Vβ9). TCR Vβ9 is expressed on subsets of TCR αβ positive thymocytes and peripheral CD4+ and CD8+ T cells. The AMKB1-2 antibody is useful for multiparameter analyses designed to study the nature of TCR Vβ9-positive cells including normal T cells as well as T cell clones, hybridomas, or tumors. It is also useful for analyzing TCR Vβ repertoires expressed by T cell populations collected from blood, tissues or other sources in health and disease models including inflammation, autoimmunity, responses to superantigens, tumors, and infectious diseases. The AMKB1-2 antibody can reportedly stimulate the proliferation of TCR Vβ9-positive T cells.
Development References (4)
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Abe J, Onimaru M, Matsumoto S, et al. Clinical role for a superantigen in Yersinia pseudotuberculosis infection.. J Clin Invest. 1997; 99(8):1823-30. (Clone-specific). View Reference
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Akolkar PN, Gulwani-Akolkar B, Pergolizzi R, Bigler RD, Silver J. Influence of HLA genes on T cell receptor V segment frequencies and expression levels in peripheral blood lymphocytes. J Immunol. 1993; 150(7):2761-2773. (Biology). View Reference
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Pilch H, Höhn H, Freitag K, et al. Improved assessment of T-cell receptor (TCR) VB repertoire in clinical specimens: combination of TCR-CDR3 spectratyping with flow cytometry-based TCR VB frequency analysis.. Clin Diagn Lab Immunol. 2002; 9(2):257-66. (Biology: Flow cytometry). View Reference
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van den Beemd R, Boor PP, van Lochem EG, et al. Flow cytometric analysis of the Vbeta repertoire in healthy controls.. Cytometry. 2000; 40(4):336-45. (Biology: Flow cytometry). View Reference
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.