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BUV661 Rat Anti-Mouse Vβ 6 T-Cell Receptor
Product Details
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BD OptiBuild™
TCR V beta 6; TCR Vβ6
Mouse (Tested in Development)
Rat F344, also known as Fischer, CDF IgG2b, λ
C57BL/6 Mouse Helper T-Cell Clone OI11
Flow cytometry (Qualified)
0.2 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 BD Horizon BUV661 under optimal conditions that minimize unconjugated dye and antibody.

Recommended Assay Procedures

For optimal and reproducible results, BD Horizon Brilliant Stain Buffer should be used anytime two or more BD Horizon Brilliant dyes (including BD OptiBuild Brilliant reagents) are used in the same experiment.  Fluorescent dye interactions may cause staining artifacts which may affect data interpretation.  The BD Horizon Brilliant Stain Buffer was designed to minimize these interactions.  More information can be found in the Technical Data Sheet of the BD Horizon Brilliant Stain Buffer (Cat. No. 563794).

Product Notices

  1. This antibody was developed for use in flow cytometry.
  2. 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.
  3. Researchers should determine the optimal concentration of this reagent for their individual applications.
  4. An isotype control should be used at the same concentration as the antibody of interest.
  5. 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.
  6. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at
  7. Please refer to for technical protocols.
  8. BD Horizon Brilliant Stain Buffer is covered by one or more of the following US patents: 8,110,673; 8,158,444; 8,575,303; 8,354,239.
  9. BD Horizon Brilliant Ultraviolet 661 is covered by one or more of the following US patents: 8,110,673; 8,158,444; 8,227,187; 8,575,303; 8,354,239.
750769 Rev. 4
Antibody Details
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The RR4-7 antibody specifically reacts with the Vβ 6 T-Cell Receptor (TCR) of mice having the a (e.g., C57BR, C57L, SJL) and b (e.g., A, BALB/c, CBA/Ca, C3H/He, C57BL, DBA/1) haplotypes of the Tcrb gene complex. The Tcrb-V6 gene locus is deleted in mice having the c (e.g., RIII) haplotype. Vβ 6 TCR-bearing T lymphocytes are clonally eliminated in mice expressing superantigen encoded by Mtv-7 (Mls-1[a], Mls[a]) endogenous provirus (e.g., AKR, CBA/J, C58, DBA/2, NZB), or Mtv-43 endogenous provirus (e.g., MA/MyJ). Exogenous MMTV-SW, as well as endogenous Mtv-44-encoded superantigen (e.g., NZW), also causes incomplete elimination of Vβ 6 TCR-expressing T cells. Plate-bound RR4-7 antibody activates Vβ 6 TCR-bearing T cells, soluble RR4-7 mAb blocks in vitro proliferation and cytolytic activities of Vβ 6 TCR-bearing T-cell clones, and injection of the antibody results in in vivo depletion of Vβ 6 TCR-bearing T cells.

The antibody was conjugated to BD Horizon™ BUV661 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome of BD Horizon BUV395 with an Ex Max of 348-nm and an acceptor dye with an Em Max at 661-nm. BD Horizon Brilliant BUV661 can be excited by the ultraviolet laser (355 nm) and detected with a 670/25 filter and a 630 nm LP.  Due to cross laser excitation of this dye, there may be significant spillover into channels detecting APC-like emissions (eg, 670/25-nm filter).


Due to spectral differences between labeled cells and beads, using BD™ CompBeads can result in incorrect spillover values when used with BD Horizon BUV661 reagents. Therefore, the use of BD CompBeads or BD CompBeads Plus to determine spillover values for these reagents is not recommended. Different BUV661 reagents (eg, CD4 vs. CD45) can have slightly different fluorescence spillover therefore, it may also be necessary to use clone-specific compensation controls when using these reagents.

750769 Rev. 4
Format Details
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The BD Horizon Brilliant™ Ultraviolet 661 (BUV661) Dye is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This tandem fluorochrome is comprised of a BUV395 donor with an excitation maximum (Ex Max) of 350-nm and an acceptor dye with an emission maximum (Em Max) at 660-nm. BUV661, driven by BD innovation, is designed to be excited by the ultraviolet laser (355-nm) and detected using an optical filter centered near 660-nm (e.g., 670/25 bandpass filter). The acceptor dye can be excited by the Red (628–640-nm) laser resulting in cross-laser excitation and fluorescence spillover. Please ensure that your instrument’s configurations (lasers and optical filters) are appropriate for this dye.
Ultraviolet 355 nm
350 nm
660 nm
750769 Rev.4
Citations & References
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Development References (14)

  1. Fairchild S, Rosenwasser OA, Dyson PJ, Tomonari K. Tcrb-V3+ T-cell deletion and a new mouse mammary tumor provirus, Mtv-44. Immunogenetics. 1992; 36(3):189-194. (Biology). View Reference
  2. Haqqi TM, Banerjee S, Anderson GD, David CS. RIII S/J (H-2r). An inbred mouse strain with a massive deletion of T cell receptor V beta genes. J Exp Med. 1989; 169(6):1903-1909. (Biology). View Reference
  3. Held W, Shakhov AN, Waanders G, et al. An exogenous mouse mammary tumor virus with properties of Mls-1a (Mtv-7). J Exp Med. 1992; 175(6):1623-1633. (Biology). View Reference
  4. Jones LA, Chin LT, Longo DL, Kruisbeek AM. Peripheral clonal elimination of functional T cells. Science. 1990; 250(4988):1726-1729. (Biology). View Reference
  5. Jones LA, Chin LT, Merriam GR, Nelson LM, Kruisbeck AM. Failure of clonal deletion in neonatally thymectomized mice: tolerance is preserved through clonal anergy. J Exp Med. 1990; 172(5):1277-1285. (Biology). View Reference
  6. Kanagawa O, Palmer E, Bill J. The T cell receptor V beta 6 domain imparts reactivity to the Mls-1a antigen. Cell Immunol. 1989; 119(2):412-426. (Immunogen). View Reference
  7. Kanagawa O. In vivo T cell tumor therapy with monoclonal antibody directed to the V beta chain of T cell antigen receptor. J Exp Med. 1989; 170(5):1513-1519. (Clone-specific). View Reference
  8. Kruisbeek AM, Shevach EM. Proliferative assays for T cell function. Curr Protoc Immunol. 2004; 3:3.12.1-3.12.14. (Clone-specific). View Reference
  9. Ramsdell F, Lantz T, Fowlkes BJ. A nondeletional mechanism of thymic self tolerance. Science. 1989; 246(4933):1038-1041. (Biology). View Reference
  10. Rocha B, Vassalli P, Guy-Grand D. The V beta repertoire of mouse gut homodimeric alpha CD8+ intraepithelial T cell receptor alpha/beta + lymphocytes reveals a major extrathymic pathway of T cell differentiation. J Exp Med. 1991; 173(2):483-486. (Biology). View Reference
  11. Rudy CK, Kraus E, Palmer E, Huber BT. Mls-1-like superantigen in the MA/MyJ mouse is encoded by a new mammary tumor provirus that is distinct from Mtv-7. J Exp Med. 1992; 175(6):1613-1621. (Biology). View Reference
  12. Tomonari K, Fairchild S. Positive and negative selection of Tcrb-V6+ T cells. Immunogenetics. 1992; 36(4):230-237. (Biology). View Reference
  13. Utsunomiya Y, Kosaka H, Kanagawa O. Differential reactivity of V beta 9 T cells to minor lymphocyte stimulating antigen in vitro and in vivo. Eur J Immunol. 1991; 21(4):1007-1011. (Clone-specific). View Reference
  14. Webb S, Morris C, Sprent J. Extrathymic tolerance of mature T cells: clonal elimination as a consequence of immunity. Cell. 1990; 63(6):1249-1256. (Biology). View Reference
View All (14) View Less
750769 Rev. 4

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.