T-cells infiltrating sites of inflammation of the skin typically express the cutaneous lymphocyte-associate antigen (CLA). This antigen is defined by the binding of the monoclonal CLA antibody HECA-452. The CLA antigen is a fucose-containing oligosaccharide and is found on many of the ligands that are recognized by the adhesion proteins P-selectin and E-selectin. CLA is primarily expressed by memory T-cells.
