Anti-CD103, clone 2Q949

CD103 is a member of the integrin series of adhesion molecules. This antigen defines a developmentally important subset of T cells, namely mucosal T cells including all IEL (intraepithelial lymphocytes) and ~20% of lamina propria T cells. Expression of CD103 is more restricted outside these mucosal organs, appearing at lower levels on T cell subsets of the lymph node, dendritic epidermis and periphery (1-3) In non-epithelial CD103+ T cells there is a bias toward expression on CD8+ cells. This antibody is reported to have signal-inducing activity in a redirected lysis assay and to co-stimulate IEL and CD8+ lymph node cells in conjunction with anti-TCR in vitro, which runs counter to the usual inhibition of CTL by anti-integrins (1). The property of costimulation is not unique to the mouse since the combination of anti-human alphaIEL plus anti-TCR will produce similar proliferation in human cells, with the exception that CD8+ cells are not stimulated (5). Applications: Suitable for use in Flow Cytometry, Immunohistochemistry, Immunoprecipitation and In vitro activation. Other applications have not been tested. Recommended Dilution: Immunohistochemistry: Frozen sections, Optimal dilutions to be determined by the researcher. Storage and Stability: May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.