Used in immunological research to study T-cell receptor (TCR) signaling and activation pathways. Helps in the development and validation of assays for T-cell function, particularly in the context of invariant natural killer T (iNKT) cells. Employed as a positive control in flow cytometry, immunoprecipitation, and functional blocking experiments. Supports investigation into immune responses, autoimmune diseases, and cancer immunotherapy by enabling precise modulation and detection of TCR-mediated activities.