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CD278 (ICOS), Biotin, clone: ISA-3, eBioscience™

Mouse Monoclonal Antibody

Brand:  Affymetrix eBioscience 13-9948-80

Code : Z2

Additional Details : Weight : 0.25000kg

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Product Code. 15310130

  • £62.30 / 25µg

Estimated Shipment date
from Supplier 25-04-2018
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Description: The ISA-3 monoclonal antibody reacts with human ICOS (Inducible COStimulatory molecule), also known as H4, CRP-1 and AILIM. ICOS is a T cell specific activation molecule and a third member of the CD28/CTLA-4 family. Human ICOS has a relative molecular mass of 55-60 kDa, composed of 27kDa and 29kDa chains. Human ICOS on activated T cells has potent costimulatory activity for T cell activation and is required for humoral immune responses, in particular for memory B cell and plasma cell generation. ICOS binds to its ligand, B7h/B7RP-1 expressed on activated APCs (antigen presenting cells) and on a number of inflamed peripheral tissues. Plate-bound ISA-3 is costimulatory for T cells and induces production of IL-4, IL-5, IL-10 and other cytokines, but not IL-2. ISA-3 has the same reactivity pattern and characteristics as F44. ISA-3 was generated against the human ICOS antigen. C398.4A, anti-mouse ICOS/H4 (cat. 14-9949), was shown to cross-react with human ICOS but binds to an epitope different from ISA-3. C398.4A stains activated cells brighter than ISA-3; however, it also exhibits higher staining of non-activated human peripheral blood or isolated PBMC. To achieve the brightest staining of ICOS on activated human T cells, please use 13-9948 or 12-9948 rather than 11-9948.Applications Reported: The ISA-3 antibody has been reported for use in flow cytometric analysis.Applications Tested: The ISA-3 antibody has been tested by flow cytometric analysis of unstimulated and CD3/CD28-stimulated (3 days) human blood cells. This can be used at less than or equal to 0.5 μg per test. A test is defined as the amount (μg) of antibody that will stain a cell sample in a final volume of 100 μL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.Filtration: 0.2μm post-manufacturing filtered.


CD278 (ICOS)
IgG1, kappa
Flow Cytometry
aqueous buffer, 0.09% sodium azide, may contain carrier protein/stabilizer
Store at 2-8°C. Do not freeze.

For Research Use Only.