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Multiparameter flow cytometric analysis of CD25 expression on unstimulated Human leucocytes (Left Plots) and stimulated (Right Plot) Human lymphocytes.
Left Plots- Human whole blood was stained with BD Horizon™ BV421 Mouse Anti-Human CD4 antibody (Cat. No. 562424/562425) and with either BD Horizon™ BV711 Mouse IgG1, κ Isotype Control (Cat. No. 563044; Left Plot) or BD Horizon™ BV711 Mouse Anti-Human CD25 antibody (Cat. No. 568875/568876; Right Plot). Erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). The bivariate pseudocolor density plot showing the correlated expression of CD25 (or Ig Isotype control staining) versus CD4 was derived from gated events with the forward and side light-scatter characteristics of intact lymphocytes.
Right Plot - Peripheral blood mononuclear cells (PBMC) were stimulated for 3 days with Phytohemagglutinin (PHA) and then stained with either BD Horizon™ BV711 Mouse IgG1, κ Isotype Control (Cat. No. 563044; dashed line histogram) or BD Horizon™ BV711 Mouse Anti-Human CD25 antibody (Cat. No. 568875/568876; solid line histogram). DAPI (4',6-Diamidino-2-Phenylindole, Dihydrochloride) Solution (Cat. No. 564907) was added to cells right before analysis. The fluorescent histogram showing CD25 expression (or Ig Isotype control staining) was derived from gated events with light-scatter characteristics of viable (DAPI-negative) lymphoblasts.
Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ software.
Multiparameter flow cytometric analysis of CD25 expression on unstimulated Human leucocytes (Left Plots) and stimulated (Right Plot) Human lymphocytes.
Left Plots- Human whole blood was stained with BD Horizon™ BV421 Mouse Anti-Human CD4 antibody (Cat. No. 562424/562425) and with either BD Horizon™ BV711 Mouse IgG1, κ Isotype Control (Cat. No. 563044; Left Plot) or BD Horizon™ BV711 Mouse Anti-Human CD25 antibody (Cat. No. 568875/568876; Right Plot). Erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). The bivariate pseudocolor density plot showing the correlated expression of CD25 (or Ig Isotype control staining) versus CD4 was derived from gated events with the forward and side light-scatter characteristics of intact lymphocytes.
Right Plot - Peripheral blood mononuclear cells (PBMC) were stimulated for 3 days with Phytohemagglutinin (PHA) and then stained with either BD Horizon™ BV711 Mouse IgG1, κ Isotype Control (Cat. No. 563044; dashed line histogram) or BD Horizon™ BV711 Mouse Anti-Human CD25 antibody (Cat. No. 568875/568876; solid line histogram). DAPI (4',6-Diamidino-2-Phenylindole, Dihydrochloride) Solution (Cat. No. 564907) was added to cells right before analysis. The fluorescent histogram showing CD25 expression (or Ig Isotype control staining) was derived from gated events with light-scatter characteristics of viable (DAPI-negative) lymphoblasts.
Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ software.
Multiparameter flow cytometric analysis of CD25 expression on unstimulated Human leucocytes (Left Plots) and stimulated (Right Plot) Human lymphocytes.
Left Plots- Human whole blood was stained with BD Horizon™ BV421 Mouse Anti-Human CD4 antibody (Cat. No. 562424/562425) and with either BD Horizon™ BV711 Mouse IgG1, κ Isotype Control (Cat. No. 563044; Left Plot) or BD Horizon™ BV711 Mouse Anti-Human CD25 antibody (Cat. No. 568875/568876; Right Plot). Erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). The bivariate pseudocolor density plot showing the correlated expression of CD25 (or Ig Isotype control staining) versus CD4 was derived from gated events with the forward and side light-scatter characteristics of intact lymphocytes.
Right Plot - Peripheral blood mononuclear cells (PBMC) were stimulated for 3 days with Phytohemagglutinin (PHA) and then stained with either BD Horizon™ BV711 Mouse IgG1, κ Isotype Control (Cat. No. 563044; dashed line histogram) or BD Horizon™ BV711 Mouse Anti-Human CD25 antibody (Cat. No. 568875/568876; solid line histogram). DAPI (4',6-Diamidino-2-Phenylindole, Dihydrochloride) Solution (Cat. No. 564907) was added to cells right before analysis. The fluorescent histogram showing CD25 expression (or Ig Isotype control staining) was derived from gated events with light-scatter characteristics of viable (DAPI-negative) lymphoblasts.
Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ software.
Multiparameter flow cytometric analysis of CD25 expression on unstimulated Human leucocytes (Left Plots) and stimulated (Right Plot) Human lymphocytes.
Left Plots- Human whole blood was stained with BD Horizon™ BV421 Mouse Anti-Human CD4 antibody (Cat. No. 562424/562425) and with either BD Horizon™ BV711 Mouse IgG1, κ Isotype Control (Cat. No. 563044; Left Plot) or BD Horizon™ BV711 Mouse Anti-Human CD25 antibody (Cat. No. 568875/568876; Right Plot). Erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). The bivariate pseudocolor density plot showing the correlated expression of CD25 (or Ig Isotype control staining) versus CD4 was derived from gated events with the forward and side light-scatter characteristics of intact lymphocytes.
Right Plot - Peripheral blood mononuclear cells (PBMC) were stimulated for 3 days with Phytohemagglutinin (PHA) and then stained with either BD Horizon™ BV711 Mouse IgG1, κ Isotype Control (Cat. No. 563044; dashed line histogram) or BD Horizon™ BV711 Mouse Anti-Human CD25 antibody (Cat. No. 568875/568876; solid line histogram). DAPI (4',6-Diamidino-2-Phenylindole, Dihydrochloride) Solution (Cat. No. 564907) was added to cells right before analysis. The fluorescent histogram showing CD25 expression (or Ig Isotype control staining) was derived from gated events with light-scatter characteristics of viable (DAPI-negative) lymphoblasts.
Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ software.
Multiparameter flow cytometric analysis of CD25 expression on unstimulated Human leucocytes (Left Plots) and stimulated (Right Plot) Human lymphocytes.
Left Plots- Human whole blood was stained with BD Horizon™ BV421 Mouse Anti-Human CD4 antibody (Cat. No. 562424/562425) and with either BD Horizon™ BV711 Mouse IgG1, κ Isotype Control (Cat. No. 563044; Left Plot) or BD Horizon™ BV711 Mouse Anti-Human CD25 antibody (Cat. No. 568875/568876; Right Plot). Erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). The bivariate pseudocolor density plot showing the correlated expression of CD25 (or Ig Isotype control staining) versus CD4 was derived from gated events with the forward and side light-scatter characteristics of intact lymphocytes.
Right Plot - Peripheral blood mononuclear cells (PBMC) were stimulated for 3 days with Phytohemagglutinin (PHA) and then stained with either BD Horizon™ BV711 Mouse IgG1, κ Isotype Control (Cat. No. 563044; dashed line histogram) or BD Horizon™ BV711 Mouse Anti-Human CD25 antibody (Cat. No. 568875/568876; solid line histogram). DAPI (4',6-Diamidino-2-Phenylindole, Dihydrochloride) Solution (Cat. No. 564907) was added to cells right before analysis. The fluorescent histogram showing CD25 expression (or Ig Isotype control staining) was derived from gated events with light-scatter characteristics of viable (DAPI-negative) lymphoblasts.
Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ software.
Multiparameter flow cytometric analysis of CD25 expression on unstimulated Human leucocytes (Left Plots) and stimulated (Right Plot) Human lymphocytes.
Left Plots- Human whole blood was stained with BD Horizon™ BV421 Mouse Anti-Human CD4 antibody (Cat. No. 562424/562425) and with either BD Horizon™ BV711 Mouse IgG1, κ Isotype Control (Cat. No. 563044; Left Plot) or BD Horizon™ BV711 Mouse Anti-Human CD25 antibody (Cat. No. 568875/568876; Right Plot). Erythrocytes were lysed with BD FACS™ Lysing Solution (Cat. No. 349202). The bivariate pseudocolor density plot showing the correlated expression of CD25 (or Ig Isotype control staining) versus CD4 was derived from gated events with the forward and side light-scatter characteristics of intact lymphocytes.
Right Plot - Peripheral blood mononuclear cells (PBMC) were stimulated for 3 days with Phytohemagglutinin (PHA) and then stained with either BD Horizon™ BV711 Mouse IgG1, κ Isotype Control (Cat. No. 563044; dashed line histogram) or BD Horizon™ BV711 Mouse Anti-Human CD25 antibody (Cat. No. 568875/568876; solid line histogram). DAPI (4',6-Diamidino-2-Phenylindole, Dihydrochloride) Solution (Cat. No. 564907) was added to cells right before analysis. The fluorescent histogram showing CD25 expression (or Ig Isotype control staining) was derived from gated events with light-scatter characteristics of viable (DAPI-negative) lymphoblasts.
Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ software.
Any use of products other than the permitted use without the express written authorization of Becton, Dickinson and Company is strictly prohibited.
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.
For optimal and reproducible results, BD Horizon Brilliant™ Stain Buffer should be used anytime BD Horizon Brilliant™ dyes are used in a multicolor flow cytometry panel. Fluorescent dye interactions may cause staining artifacts which may affect data interpretation. The BD Horizon Brilliant Stain Buffer was designed to minimize these interactions. When BD Horizon Brilliant Stain Buffer is used in in the multicolor panel, it should also be used in the corresponding compensation controls for all dyes to achieve the most accurate compensation. For the most accurate compensation, compensation controls created with either cells or beads should be exposed to BD Horizon Brilliant Stain Buffer for the same length of time as the corresponding multicolor panel. More information can be found in the Technical Data Sheet of the BD Horizon Brilliant Stain Buffer (Cat. No. 563794/566349) or the BD Horizon Brilliant Stain Buffer Plus (Cat. No. 566385).
The BC96 monoclonal antibody specifically binds to human CD25, the low-affinity alpha subunit of the Interleukin-2 Receptor (IL-2Rα), which is also known as TAC antigen. IL2RA encodes CD25 which is a 55 kDa type I transmembrane glycoprotein comprised of an extracellular region with two Complement Control Protein domains (CCP) followed by a transmembrane region and a short cytoplasmic tail. CD25 is constitutively expressed at high levels on natural T regulatory cells and variably expressed on conventional T cells and B cells and their precursors, NK cells, monocytes, and macrophages. CD25 expression can be highly upregulated upon antigenic or mitogenic stimulation of T cells or B cells. A soluble form of CD25 is found in biological fluids due to proteolytic cleavage of the extracellular region of transmembrane CD25. CD25 noncovalently associates with CD122 (IL-2Rβ chain) and CD132 (IL-2Rγ, also known as the common γ chain or γc) to form the high-affinity signal-transducing IL-2R complex (IL-2Rαβγ). This heterotrimeric receptor mediates biological activities of IL-2 which can act as a cellular activation, growth, and differentiation factor and regulator of cell viability. Analysis of CD25 expression can be used to characterize the nature of normal leucocytes in their resting states or activated during inflammatory or immune responses as well as those present in certain disease states.
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