Multiparameter flow cytometric analysis of CD20 expression on Human peripheral blood leukocyte populations. Fresh whole blood was treated with BD Pharm Lyse™ Lysing Buffer (Cat. No. 555899) to lyse erythrocytes. After washing, the leukocytes were stained with either BD Horizon™ RB613 Mouse IgG2b, κ Isotype Control (Cat. No. 571121; Left Plot) or BD Horizon™ RB613 Mouse Anti-Human CD20 antibody (Cat. No. 571119/571120; Right Plot). The bivariate pseudocolor density plot showing the correlated expression of CD20 (or Ig Isotype control staining) versus side light-scatter (SSC-A) signals was derived from gated events with the forward and side light-scatter characteristics of viable leukocytes. Flow cytometry and data analysis were performed using a BD FACSymphony™ A5 SE Cell Analyzer System and FlowJo™ Software.
Multiparameter flow cytometric analysis of CD20 expression on Human peripheral blood leukocyte populations. Fresh whole blood was treated with BD Pharm Lyse™ Lysing Buffer (Cat. No. 555899) to lyse erythrocytes. After washing, the leukocytes were stained with either BD Horizon™ RB613 Mouse IgG2b, κ Isotype Control (Cat. No. 571121; Left Plot) or BD Horizon™ RB613 Mouse Anti-Human CD20 antibody (Cat. No. 571119/571120; Right Plot). The bivariate pseudocolor density plot showing the correlated expression of CD20 (or Ig Isotype control staining) versus side light-scatter (SSC-A) signals was derived from gated events with the forward and side light-scatter characteristics of viable leukocytes. Flow cytometry and data analysis were performed using a BD FACSymphony™ A5 SE Cell Analyzer System and FlowJo™ Software.
Product Details
BD Horizon™
MS4A1; B1; Bp35; LEU-16; S7
Human (QC Testing), Rhesus,Cynomolgus,Baboon (Tested in Development)
Mouse C57BL/6 IgG2b, κ
Human 6.16c1.3 B cell line
Flow cytometry (Routinely Tested)
5 µl/test
II B22; III B739, NL382; IV B201
931
Aqueous buffered solution containing ≤0.09% sodium azide.
RUO
Preparation And Storage
The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated to the dye under optimum conditions and unreacted dye was removed. Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.
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.
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
- 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).
- 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.
- Species cross-reactivity detected in product development may not have been confirmed on every format and/or application.
- Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
- CF™ is a trademark of Biotium, Inc.
- For U.S. patents that may apply, see bd.com/patents.
Companion Products
Stain Buffer (FBS) RUO
Size
500 mL
Cat No.
554656
Stain Buffer (BSA) RUO
Size
500 mL
Cat No.
554657
RB613 Mouse IgG2b, κ Isotype Control RUO
Size
0.1 mg
Cat No.
571121
Lysing Buffer RUO
Size
100 mL
Cat No.
555899
Lysing Solution 10X Concentrate IVD
Size
100 mL
Cat No.
349202
571119 Rev. 1
Antibody Details
2H7
The 2H7 monoclonal antibody specifically binds to CD20, encoded by the MS4A1 (Membrane-spanning 4-domains, subfamily A, member 1) gene. CD20 is a 33-37 kDa, unglycosylated four-transmembrane phosphoprotein. CD20 is expressed on pre-B-cells, resting and activated B cells, and follicular dendritic cells, but not plasma cells. Low level CD20 expression is observed on a small subset of normal circulating T lymphocytes. The CD20 molecule is involved in the regulation of B-cell activation.
571119 Rev. 1
Format Details
RB613
The BD Horizon RealBlue™ 613 (RB613) Dye is part of the BD® family of blue dyes. It is a tandem fluorochrome with an excitation maximum (Ex Max) at 492-nm and an emission maximum (Em Max) at 613-nm as measured using an antibody-dye conjugate. Driven by BD® innovation, RB613 can be used on both spectral and conventional cytometers and is designed to be excited by the Blue laser (488-nm) with reduced excitation by the 561-nm Yellow-Green laser. For conventional instruments equipped with a Blue laser (488-nm), RB613 can be used as an alternative to PE-CF594 and we recommend using an optical filter centered near 610-nm (eg, a 610/20-nm bandpass filter). For spectral instruments equipped with a Blue laser (488-nm), it can be used in conjunction with PE-CF594. RB613 is on average brighter than PE-CF594 off the blue laser.
RB613
492 nm
613 nm
571119 Rev.1
Citations & References
View product citations for antibody "571119" on CiteAb
Development References (9)
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Bjornson-Hooper ZB, Fragiadakis GK, Spitzer MH, et al. A Comprehensive Atlas of Immunological Differences Between Humans, Mice, and Non-Human Primates.. Front Immunol. 2022; 13:867015. (Clone-specific: Flow cytometry). View Reference
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Clark EA, Yokochi T. Human B cell and B cell blast-associated surface molecules defined with monoclonal antibodies. In: Bernard A, Boumsell L, Dausset J, Milstein C, Schlossman SF, ed. Leukocyte Typing. Berlin: Springer-Verlag; 1984:339-346.
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Herodin F, Thullier P, Garin D, Drouet M. Nonhuman primates are relevant models for research in hematology, immunology and virology. Eur Cytokine Netw. 2005; 16(2):104-116. (Biology). View Reference
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Hultin LE, Hausner MA, Hultin PM, Giorgi JV. CD20 (pan-B cell) antigen is expressed at a low level on a subpopulation of human T lymphocytes. Cytometry. 1993; 14(2):193-204. (Clone-specific: Flow cytometry). View Reference
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Knapp W. W. Knapp .. et al., ed. Leucocyte typing IV : white cell differentiation antigens. Oxford New York: Oxford University Press; 1989:1-1182.
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Ledbetter JA, Clark EA. Surface phenotype and function of tonsillar germinal center and mantle zone B cell subsets. Hum Immunol. 1986; 15:30-43. (Immunogen: Blocking, Flow cytometry). View Reference
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Loken MR, Shah VO, Dattilio KL, Civin CI. Flow cytometric analysis of human bone marrow. II. Normal B lymphocyte development. Blood. 1987; 70(5):1316-1324. (Biology). View Reference
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Reinherz EL. Ellis L. Reinherz .. et al., ed. Leukocyte typing II. New York: Springer-Verlag; 1986:1-560.
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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.
571119 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.