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Multiparameter flow cytometric analysis of CD4 expression on human peripheral blood leucocyte populations. Human whole blood was stained with either BD Horizon™ APC-R700 Mouse IgG2b, κ Isotype Control (Cat. No. 565138; Left Plot) or BD Horizon APC-R700 Mouse Anti-Human CD4 antibody (Cat. No. 566808/566809; Right Plot). Erythrocytes were lysed with BD Pharm Lyse™ Lysing Buffer (Cat. No. 555899). The two-parameter pseudocolor density plots 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 viable leucocyte 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 human peripheral blood leucocyte populations. Human whole blood was stained with either BD Horizon™ APC-R700 Mouse IgG2b, κ Isotype Control (Cat. No. 565138; Left Plot) or BD Horizon APC-R700 Mouse Anti-Human CD4 antibody (Cat. No. 566808/566809; Right Plot). Erythrocytes were lysed with BD Pharm Lyse™ Lysing Buffer (Cat. No. 555899). The two-parameter pseudocolor density plots 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 viable leucocyte 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 human peripheral blood leucocyte populations. Human whole blood was stained with either BD Horizon™ APC-R700 Mouse IgG2b, κ Isotype Control (Cat. No. 565138; Left Plot) or BD Horizon APC-R700 Mouse Anti-Human CD4 antibody (Cat. No. 566808/566809; Right Plot). Erythrocytes were lysed with BD Pharm Lyse™ Lysing Buffer (Cat. No. 555899). The two-parameter pseudocolor density plots 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 viable leucocyte 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 human peripheral blood leucocyte populations. Human whole blood was stained with either BD Horizon™ APC-R700 Mouse IgG2b, κ Isotype Control (Cat. No. 565138; Left Plot) or BD Horizon APC-R700 Mouse Anti-Human CD4 antibody (Cat. No. 566808/566809; Right Plot). Erythrocytes were lysed with BD Pharm Lyse™ Lysing Buffer (Cat. No. 555899). The two-parameter pseudocolor density plots 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 viable leucocyte 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 human peripheral blood leucocyte populations. Human whole blood was stained with either BD Horizon™ APC-R700 Mouse IgG2b, κ Isotype Control (Cat. No. 565138; Left Plot) or BD Horizon APC-R700 Mouse Anti-Human CD4 antibody (Cat. No. 566808/566809; Right Plot). Erythrocytes were lysed with BD Pharm Lyse™ Lysing Buffer (Cat. No. 555899). The two-parameter pseudocolor density plots 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 viable leucocyte 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 human peripheral blood leucocyte populations. Human whole blood was stained with either BD Horizon™ APC-R700 Mouse IgG2b, κ Isotype Control (Cat. No. 565138; Left Plot) or BD Horizon APC-R700 Mouse Anti-Human CD4 antibody (Cat. No. 566808/566809; Right Plot). Erythrocytes were lysed with BD Pharm Lyse™ Lysing Buffer (Cat. No. 555899). The two-parameter pseudocolor density plots 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 viable leucocyte populations. Flow cytometry and data analysis were performed using a BD LSRFortessa™ X-20 Cell Analyzer System and FlowJo™ software.
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The OKT4 monoclonal antibody specifically recognizes CD4 which is also known as T4 and Leu-3. CD4 is expressed on most thymocytes, T-helper/inducer cells, regulatory T cells (Tregs), and NKT cells. It is also variably expressed on monocytes, macrophages, and some dendritic cells. CD4 is a ~55 kDa type I transmembrane glycoprotein that is encoded by CD4 which belongs to the immunoglobulin superfamily (IgSF). CD4 binds to a nonpolymorphic region of MHC class II and serves as a coreceptor, along with the T cell receptor for antigen (TCR), for the MHC Class II-restricted recognition of antigens on antigen-presenting cells. CD4 also functions as a receptor for human immunodeficiency viruses (HIV). CD4 has four immunoglobulin-like extracellular domains in its extracellular region and a CXCP binding motif for p56Lck in its cytoplasmic domain which regulates the antigen-bound TCR-induced signaling cascade.
This antibody was conjugated to BD Horizon APC-R700, which has been developed exclusively by BD Biosciences as a better alternative to Alexa Fluor® 700. APC-R700 excites and emits at similar wavelengths to Alexa Fluor® 700 yet exhibits significantly improved brightness. This dye can be excited by the red laser and detected with the same filter set as Alexa Fluor® (eg, 730/45-nm filter).
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