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      RY775 Mouse Anti-Human CD4
      RY775 Mouse Anti-Human CD4
      Multiparameter flow cytometric analysis of CD4 expression on Human peripheral blood leukocyte populations. Human whole blood was stained with either BD Horizon™ RY775 Mouse IgG1, κ Isotype Control (Cat. No. 571408; Left Plot) or BD Horizon™ RY775 Mouse Anti-Human CD4 antibody (Cat. No. 571661/571739; Right Plot). The erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). The bivariate pseudocolor density plot showing the correlated expression of CD4 (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 intact leukocyte populations. Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ Software.
      RY775 Mouse Anti-Human CD4
      Multiparameter flow cytometric analysis of CD4 expression on Rhesus macaque peripheral blood leukocyte populations. Rhesus macaque whole blood was stained with either BD Horizon™ RY775 Mouse IgG1, κ Isotype Control (Cat. No. 571408; Left Plot) or BD Horizon™ RY775 Mouse Anti-Human CD4 antibody (Cat. No. 571661/571739; Right Plot). The erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). The bivariate pseudocolor density plot showing the correlated expression of CD4 (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 intact leukocyte populations. Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ Software.
      RY775 Mouse Anti-Human CD4 RY775 Mouse Anti-Human CD4
      Multiparameter flow cytometric analysis of CD4 expression on Human peripheral blood leukocyte populations. Human whole blood was stained with either BD Horizon™ RY775 Mouse IgG1, κ Isotype Control (Cat. No. 571408; Left Plot) or BD Horizon™ RY775 Mouse Anti-Human CD4 antibody (Cat. No. 571661/571739; Right Plot). The erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). The bivariate pseudocolor density plot showing the correlated expression of CD4 (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 intact leukocyte populations. Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ Software.
      Multiparameter flow cytometric analysis of CD4 expression on Rhesus macaque peripheral blood leukocyte populations. Rhesus macaque whole blood was stained with either BD Horizon™ RY775 Mouse IgG1, κ Isotype Control (Cat. No. 571408; Left Plot) or BD Horizon™ RY775 Mouse Anti-Human CD4 antibody (Cat. No. 571661/571739; Right Plot). The erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). The bivariate pseudocolor density plot showing the correlated expression of CD4 (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 intact leukocyte populations. Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ Software.
      Product Details
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      BD Horizon™
      L3T4 ; T-cell surface antigen T4/Leu-3; W3/25 ; CD4 antigen (p55)
      Rhesus,Cynomolgus,Baboon (QC Testing), Human (Tested in Development)
      Mouse BALB/c IgG1, κ
      Human HPB-ALL Cell Line
      Flow cytometry (Routinely Tested)
      5 µl/test
      920
      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 unconjugated antibody and free dye were removed. Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.
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      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.

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      Product Notices

      1. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
      2. 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.
      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. 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).
      5. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
      6. An isotype control should be used at the same concentration as the antibody of interest.
      7. Species cross-reactivity detected in product development may not have been confirmed on every format and/or application.
      8. Please refer to http://regdocs.bd.com to access safety data sheets (SDS).
      9. 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.
      10. 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.
      11. 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.
      12. Cy is a trademark of Global Life Sciences Solutions Germany GmbH or an affiliate doing business as Cytiva.
      13. For U.S. patents that may apply, see bd.com/patents.
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      571661 Rev. 1
      Antibody Details
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      L200

      The L200 monoclonal antibody specifically binds to the human form of the 56 kDa transmembrane glycoprotein, CD4, which is present on the T-helper/inducer subset of normal human donor peripheral blood lymphocytes. The L200 antibody also cross-reacts with a subset of CD3-positive peripheral blood lymphocytes, but not monocytes, of both Rhesus and Cynomolgus Macaque monkeys. Cross-reactivity on both lymphocytes and monocytes (weak) from baboons is also observed. CD4 distribution on lymphocytes is similar for both human and monkey cells, with the majority of CD4-positive lymphocytes being CD8-negative and lacking reactivity with antibodies to B- or NK-cell markers.

      571661 Rev. 1
      Format Details
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      RY775
      The BD Horizon RealYellow™ 775 (RY775) Dye is part of the BD® family of yellow-green dyes. It is a tandem fluorochrome with an excitation maximum (Ex Max) at 557-nm and an emission maximum (Em Max) at 775-nm as measured using an antibody-dye conjugate. Driven by BD® innovation, RY775 can be used on both spectral and conventional cytometers and is designed to be excited by the Yellow-Green laser (561-nm) with minimal excitation by the 488-nm Blue laser. For conventional instruments equipped with a Yellow-Green laser (561-nm), RY775 can be used as an alternative to PE-Cy7 and we recommend using an optical filter centered near 780-nm (eg, a 780/60-nm bandpass filter).
      altImg
      RY775
      Yellow-Green 561 nm
      557 nm
      775 nm
      571661 Rev.1
      Citations & References
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      View product citations for antibody "571661" on CiteAb

      Development References (13)

      1. Bleavins MR, Brott DA, Alvey JD, de la Iglesia FA. Flow cytometric characterization of lymphocyte subpopulations in the cynomolgus monkey (Macaca fascicularis). Vet Immunol Immunopathol. 1993; 37(1):1-13. (Biology). View Reference
      2. Giorgi JV, Hultin LE, Desrosiers RC. The immunopathogenesis of retroviral diseases: no immunophenotypic alterations in T, B, and NK cell subsets in SIVmac239-challenged rhesus macaques protected by SIV delta nef vaccination. J Med Primatol. 1996; 25(3):186-191. (Biology). View Reference
      3. Indzhiia LV, Yakovleva LA, Overbaugh J, et al. Baboon T cell lymphomas expressing the B cell-associated surface proteins CD40 and Bgp95. J Clin Invest. 1992; 12(3):225-236. (Biology). View Reference
      4. Jacobsen CN, Aasted B, Broe MK, Petersen JL. Reactivities of 20 anti-human monoclonal antibodies with leucocytes from ten different animal species. Vet Immunol Immunopathol. 1993; 39(4):461-466. (Biology). View Reference
      5. Kannanganat S, Ibegbu C, Chennareddi L, Robinson HL, Amara RR. Multiple-cytokine-producing antiviral CD4 T cells are functionally superior to single-cytokine-producing cells.. J Virol. 2007; 81(16):8468-76. (Clone-specific). View Reference
      6. Lin G-X, Yang X, Hollemweguer E, et al. Cross-reactivity of CD antibodies in eight animal species. In: Mason D. David Mason .. et al., ed. Leucocyte typing VII : white cell differentiation antigens : proceedings of the Seventh International Workshop and Conference held in Harrogate, United Kingdom. Oxford: Oxford University Press; 2002:519-523.
      7. Powell JD, McClure HM, Anderson D, Fultz PN, Sell KW, Ahmed-Ansari A. Phenotypic and functional differences in NK and LAK cells in the peripheral blood of sooty mangabeys and rhesus macaques. Cell Immunol. 1989; 124(1):107-118. (Biology). View Reference
      8. Pugach P, Krarup A, Gettie A, et al. In vivo binding and retention of CD4-specific DARPin 57.2 in macaques.. PLoS One. 2010; 5(8):e12455. (Clone-specific: Flow cytometry). View Reference
      9. Savary CA, Lotzova E, Jackson HJ, Jardine JH, Ang KK. Analysis of interleukin-2-activated killer cells of rhesus monkeys: striking resemblance to the human system. J Leukoc Biol. 1993; 54(4):307-313. (Biology). View Reference
      10. Tryphonas H, Lacroix F, Hayward S, Izaguirre C, Parenteau M, Fournier J. Cell surface marker evaluation of infant Macaca monkey leukocytes in peripheral whole blood using simultaneous dual-color immunophenotypic analysis. J Med Primatol. 1996; 25(2):89-105. (Biology). View Reference
      11. Verdier F, Aujoulat M, Condevaux F, Descotes J. Determination of lymphocyte subsets and cytokine levels in cynomolgus monkeys. Toxicology. 1995; 105(1):81-90. (Biology). View Reference
      12. Warren CJ, Meyerson NR, Dirasantha O, Feldman ER, Wilkerson GK, Sawyer SL. Selective use of primate CD4 receptors by HIV-1.. PLoS Biol. 2019; 17(6):e3000304. (Clone-specific: Flow cytometry). View Reference
      13. Wilson AD, Shooshtari M, Finerty S, Watkins P, Morgan AJ. Selection of monoclonal antibodies for the identification of lymphocyte surface antigens in the New World primate Saguinus oedipus oedipus (cotton top tamarin). J Immunol Methods. 1995; 178(2):195-200. (Biology). View Reference
      View All (13) View Less
      571661 Rev. 1

      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.