Used in immunotherapy research to modulate T-cell activity by targeting the IL-2 receptor beta chain (CD122), this antibody helps in studying immune regulation, particularly in autoimmune diseases and organ transplantation. It enables selective inhibition of pathogenic T-cell responses while preserving regulatory T cells, supporting development of targeted immunosuppressive therapies. Also employed as a reference in antibody engineering and biosimilar development due to its well-characterized binding properties. Its role in blocking IL-2 signaling makes it valuable for investigating cytokine-driven immune disorders.