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F0101B) and Mouse Anti-Human CD3e PE-conjugated Monoclonal Antibody (Catalog # FAB100P). Quadrant markers were set based on control antibody staining (Catalog # MAB002)." class="big_lightbox" target="_blank">
165-B7) is immobilized at 0.5 µg/mL, Recombinant Human ICOS (Catalog # 9865-CS) binds with an ED50 of 25-125 ng/mL." class="big_lightbox" target="_blank">
The C398.4A antibody reacts with the human, mouse and rat 47-57 kD ICOS protein, also known as inducible costimulatory molecule and H4. This protein is homologous to the CD28/CTLA-4 proteins. ICOS is expressed on activated T cells and a subset of thymocytes. It is able to costimulate T cells proliferation. In addition, ICOS is involved in humoral immune responses (B cell germinal center formation). The ICOS ligand is B7h/B7RP-1 or B7-H2. ICOS stimulation has been shown to potentiate TCR-mediated IL-4 and IL-10 production and has been proposed to play a role in Th2 cell development. The C398.4A antibody is useful for flow cytometric analysis and is able to costimulate T cell activation and proliferation.