CD4 FITC - CD28 PE Bi-Test Reagent
Quick Overview for CD4 FITC - CD28 PE Bi-Test Reagent (ABIN2763724)
Target
Reactivity
Host
Conjugate
Application
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Brand
- Bi-Test™
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Purification
- Protein A/G Chromatography
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Isotype
- IgG1
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Restrictions
- For Research Use only
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Storage
- 4 °C
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- CD4 + CD28
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Alternative Name
- CD4, CD28
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Background
- Identification of CD4 on human helper/inducer T cells expressing the 60,000 M.W. surface antigen (HLA class II reactive). CD4 is present in low density on monocytes. Anti-human CD28 binds the 44 kDa MW cell surface protein on the surface of most T cells. CD28 acts as the ligand for the B7/BB-1 Molecule on the surface of activated B cells. B7/BB-1 co-stimulates T cells through CD28, along with CD2 and CD3. CD28 antigen is a disulfide-linked homodimeric glycoprotein. The CD28 antigen is present on approximately 60 % -80 % of lymphocytes (95 % of CD4 and 50 % of CD8 lymphocytes). CD28 regulates the expression of cytokines by T cells, not only IL-2, but also IL-1 alpha and CSF-1, usually synthesized by accessory cells. CD28 functions as a cell adhesion molecule (CAM) for certain T cell subsets.
Target
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