Flow cytometric analysis of Human CD28 expression on human PBMC (human peripheral blood mononuclear cell). Human PBMC were stained with Brilliant Violet 421™ Mouse Anti-Human CD3 antibody and either FITC Mouse IgG1 Isotype Control (Left panel) or SDT FITC Mouse Anti-Human CD28 Antibody (Right panel) at 0.25 μg/test. Flow cytometry and data analysis were performed using BD FACSymphony™ A1 and FlowJo™ software.
Product Details
Product Details
Product Specification
Host | Mouse |
Antigen | CD28 |
Synonyms | T-cell-specific surface glycoprotein CD28; TP44 |
Location | Cell membrane |
Accession | P10747 |
Clone Number | S-R547 |
Antibody Type | Mouse mAb |
Isotype | IgG1 |
Application | FCM |
Reactivity | Hu |
Positive Sample | Human PBMC |
Purification | Protein G |
Concentration | 0.05mg/ml |
Conjugation | FITC |
Physical Appearance | Liquid |
Storage Buffer | PBS, 25% Glycerol, 1% BSA, 0.3% Proclin 300 |
Stability & Storage | 12 months from date of receipt / reconstitution, 2 to 8 °C as supplied. |
Dilution
application | dilution | species |
FCM | 5 μl per million cells in 100μl volume | Hu |
Background
CD28 (Cluster of Differentiation 28) is one of the proteins expressed on T cells that provide co-stimulatory signals required for T cell activation and survival. T cell stimulation through CD28 in addition to the T-cell receptor (TCR) can provide a potent signal for the production of various interleukins (IL-6 in particular). CD28 is the receptor for CD80 (B7.1) and CD86 (B7.2) proteins. When activated by Toll-like receptor ligands, the CD80 expression is upregulated in antigen-presenting cells (APCs). The CD86 expression on antigen-presenting cells is constitutive (expression is independent of environmental factors). It is generally reported, that CD28 is expressed on 50% of CD8+ T cells and more than 80% CD4+ T cells in human, but during the course of activation some T cells lose this molecule. In general, CD28 is a primary costimulatory molecule for T cell activation.
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