Thermo Fisher Scientific CD28 Recombinant Rabbit Monoclonal Antibody (BLR199J)
Recombinant rabbit monoclonal antibody against human CD28. Validated for IHC(P) and ICC/IF with high specificity. Recommended dilution 1:100–1:500. Provides reliable detection of T-cell costimulatory receptor CD28 in research applications.
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Applications and Tested Dilution
| Application | Tested Dilution |
|---|---|
| Immunohistochemistry (Paraffin) (IHC (P)) | 1:100–1:500 |
| Immunocytochemistry (ICC/IF) | 1:100–1:500 |
Product Specifications
| Property | Description |
|---|---|
| Species Reactivity | Human |
| Host / Isotype | Rabbit / IgG |
| Expression System | HEK293F |
| Class | Recombinant Monoclonal |
| Type | Antibody |
| Clone | BLR199J |
| Immunogen | Recombinant protein representing the extracellular domain of Human T-cell-specific surface glycoprotein CD28 (residues 19–140) |
| Conjugate | Unconjugated |
| Form | Liquid |
| Concentration | 1 mg/mL |
| Purification | Purified |
| Storage Buffer | BBS, pH 8.2 |
| Contains | 0.09% sodium azide |
| Storage Conditions | 4 °C |
| Shipping Conditions | Ambient (domestic); Wet ice (international) |
Product Specific Information
- For immunocytochemistry, epitope retrieval with citrate buffer (pH 6.0) is recommended for FFPE cell sections.
Target Information
CD28 antigen is a 44 kDa disulfide-linked homodimeric T-cell specific surface glycoprotein. It belongs to the immunoglobulin superfamily and is constitutively expressed on most peripheral blood T lymphocytes. CD28 acts as a critical T-cell costimulatory receptor, providing the essential second activation signal by binding CD80 and CD86 expressed by antigen-presenting cells. It also prevents T cells from entering an anergic or apoptotic state. In murine lymphoid organs and blood, all CD4⁺ and CD8⁺ T cells express CD28, with expression levels varying during thymocyte maturation. CD28 dysfunction is associated with diseases such as mycosis fungoides and Sezary’s disease.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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