IL-2R beta (CD122) a type cytokine receptor expressed on T lymphocytes is a receptor for IL-2 (Kd 1 nM approximately)[1] IL-2R beta mediates T cell immune responses such as stimulating T cell proliferation and activating lymphokine-activated killer cells[2] IL-2R beta/CD122 Protein Canine (HEK293 His) is a recombinant canine IL-2R betawith a C-Terminal His tag which is produced in HEK293 cells