Used in immunological research to study T-cell development, survival, and homeostasis. Binds to IL-7 and modulates signaling pathways critical for lymphocyte activation. Employed in assays such as ELISA, flow cytometry, and protein-protein interaction studies due to the His tag, enabling detection and purification. Supports development of therapeutics targeting immune disorders, including autoimmune diseases and cancers. Also used in generating antibodies and evaluating receptor-ligand interactions in drug discovery.