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BD Horizon™ R718 Mouse Anti-Biotin
Clone BK-1/39 (RUO)




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Multiparameter flow cytometric analysis of CD19 expression on viable Mouse splenic lymphocytes. Left Panel - One-layer staining: Mouse splenic leukocytes were preincubated with Purified Rat Anti-Mouse CD16/CD32 antibody (Mouse BD Fc Block™) [Cat. No. 553142] and then stained with either BD Horizon™ R718 Rat IgG2a, κ Isotype Control (Cat. No. 566941; dashed line histogram) or BD Horizon™ R718 Rat Anti-Mouse CD19 antibody (Cat. No. 567063; solid line histogram) at 0.125 µg/test. Right Panel - Two-layer staining: Mouse splenic leukocytes were preincubated with Mouse BD Fc Block™ and then stained with Biotin Rat Anti-Mouse CD19 antibody (Cat. No. 553784), washed, and secondarily stained with either BD Horizon™ R718 Mouse IgG1, κ Isotype Control (Cat. No. 566928; dashed line histogram) or BD Horizon™ R718 Mouse Anti-Biotin antibody (Cat. No. 570942/571014; solid histogram) at 0.125 µg/test. DAPI Solution (Cat. No. 564907) was added to cells right before analysis. The fluorescence histograms showing CD19 expression (or Ig Isotype control staining) were derived from gated events with the forward and side light-scatter characteristics of viable (DAPI-negative) lymphocytes. Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ Software. Data shown on this Technical Data Sheet are not lot specific.

Multiparameter flow cytometric analysis of CD25 expression on viable Mouse splenic lymphocytes. Mouse splenic leukocytes were preincubated with Purified Rat Anti-Mouse CD16/CD32 antibody (Mouse BD Fc Block™) [Cat. No. 553142] and stained with Biotin Rat Anti-Mouse CD25 antibody (Cat. No. 567831). The cells were washed and then secondarily stained with either BD Horizon™ R718 Mouse IgG1, κ Isotype Control (Cat. No. 566928; dashed line histogram) or BD Horizon™ R718 Mouse Anti-Biotin antibody (Cat. No. 570942/571014; solid histogram) at 0.125 µg/test. DAPI Solution (Cat. No. 564907) was added to cells right before analysis. The bivariate pseudocolor density plot showing CD25 expression (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 (DAPI-negative) splenic lymphocytes. Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ Software. Data shown on this Technical Data Sheet are not lot specific.
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BD Horizon™ R718 Mouse Anti-Biotin

BD Horizon™ R718 Mouse Anti-Biotin
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Regulatory Status Legend
Any use of products other than the permitted use without the express written authorization of Becton, Dickinson and Company is strictly prohibited.
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.
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- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
- 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.
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- An isotype control should be used at the same concentration as the antibody of interest.
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- 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.
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Companion Products

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The BK-1/39 monoclonal antibody specifically recognizes biotin. Biotin is a water-soluble B complex vitamin that functions as a coenzyme which is required for the cellular metabolism of proteins and fats and the production of fatty acids. Although required by all organisms, biotin synthesis is limited to bacteria, yeasts, molds, algae, and some plants. Biotin is also useful for tagging molecules such as nucleic acids or proteins including antibodies. The BK-1/39 antibody can used to detect biotinylated target molecules and antibodies especially when signal amplification is desired. Fluorescent BK-1/39 antibody conjugates can provide a useful alternative to fluorescent avidin conjugates in order to minimize background staining and maximize signal intensity.

Development References (4)
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Levit-Zerdoun E, Becker M, Pohlmeyer R, et al. Survival of Igα-Deficient Mature B Cells Requires BAFF-R Function.. J Immunol. 2016; 196(5):2348-60. (Clone-specific: Flow cytometry). View Reference
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Mavrangelos C, Swart B, Nobbs S, Nicholson IC, Macardle PJ, Zola H. Detection of low-abundance membrane markers by immunofluorescence--a comparison of alternative high-sensitivity methods and reagents.. J Immunol Methods. 2004; 289(1-2):169-78. (Methodology: Flow cytometry). View Reference
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Pishesha N, Bilate AM, Wibowo MC, et al. Engineered erythrocytes covalently linked to antigenic peptides can protect against autoimmune disease.. Proc Natl Acad Sci U S A. 2017; 114(12):3157-3162. (Clone-specific: Flow cytometry). View Reference
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Zempleni J, Wijeratne SS, Hassan YI. Biotin.. Biofactors. 2009; 35(1):36-46. (Biology). View Reference
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For Research Use Only. Not for use in diagnostic or therapeutic procedures.