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
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
- Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
- For U.S. patents that may apply, see bd.com/patents.
- 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.
- Since applications vary, each investigator should titrate the reagent to obtain optimal results.
- 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.
- 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.
- For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
- 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.
- Tandem fluorochromes contain both an energy donor and an energy acceptor. Although every effort is made to minimize the lot-to-lot variation in the efficiency of the fluorochrome energy transfer, differences in the residual emission from the donor may be observed. Additionally, multi-laser cytometers may directly excite both the donor and acceptor fluorochromes. Therefore, we recommend for every tandem conjugate, a matched individual single-stain control be acquired for generating a compensation or spectral unmixing matrix.
- Cy is a trademark of Global Life Sciences Solutions Germany GmbH or an affiliate doing business as Cytiva.
Companion Products
The BP-3 antibody reacts with CD157, also known as the BP-3 alloantigen or Bone marrow STromal cell antigen-1 (BST-1), found in a variety of common laboratory strains of mice (AKR, BALB/c, CBA/N, C3H/HeJ, C57BL/6, DBA/2, NZB, C.B-17, SJL and Swiss, but not A/J). CD157 is a differentially glycosylated GPI-linked cell-surface glycoprotein with a core protein of 32 kDa and differing patterns of glycosylation in different types of cells. It is a member, along with CD38, of a family of genetically-related ectoenzymes. The BP-3 alloantigen is expressed on the B lineage from the earliest detectable progenitors to circulating immature B lymphocytes, on immature thymocytes up to the expression of the T-cell receptor, on circulating neutrophils, peritoneal macrophages, on subpopulations of stromal cells in peripheral lymphoid organs (but not in bone marrow or thymus), on intestinal epithelial cells, and in the lumen of kidney-collecting tubules. The distribution of CD157 antigen on leukocytes and stromal cells of lymphoid organs suggests that it may be involved in leukocyte-stroma interactions which support the development, migration, and/or responses of leukocyte populations.
Development References (6)
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Dong C, Wang J, Neame P, Cooper MD. The murine BP-3 gene encodes a relative of the CD38/NAD glycohydrolase family. Int Immunol. 1994; 6(9):1353-1360. (Biology). View Reference
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Dong C, Willerford D, Alt FW, Cooper MD. Genomic organization and chromosomal localization of the mouse Bp3 gene, a member of the CD38/ADP-ribosyl cyclase family. Immunogenetics. 1996; 45(1):35-43. (Biology). View Reference
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Itoh M, Ishihara K, Hiroi T, et al. Deletion of bone marrow stromal cell antigen-1 (CD157) gene impaired systemic thymus independent-2 antigen-induced IgG3 and mucosal TD antigen-elicited IgA responses. J Immunol. 1998; 161(8):3974-3983. (Biology). View Reference
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McNagny KM, Bucy RP, Cooper MD. Reticular cells in peripheral lymphoid tissues express the phosphatidylinositol-linked BP-3 antigen. Eur J Immunol. 1991; 21(2):509-515. (Biology). View Reference
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McNagny KM, Cazenave PA, Cooper MD. BP-3 alloantigen. A cell surface glycoprotein that marks early B lineage cells and mature myeloid lineage cells in mice. J Immunol. 1988; 141(8):2551-2556. (Immunogen). View Reference
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Ngo VN, Korner H, Gunn MD, et al. Lymphotoxin alpha/beta and tumor necrosis factor are required for stromal cell expression of homing chemokines in B and T cell areas of the spleen. J Exp Med. 1999; 189(2):403-412. (Biology). View Reference
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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.