Description: The N2B2 monoclonal antibody reacts with mouse TNF-related apoptosis-inducing ligand (TRAIL), a member of the TNF superfamily. TRAIL is not detected on the surface of freshly isolated T, B, or NK cells, but can be induced preferentially on CD3- NK1.1+ NK cells after stimulation with IL-2 or IL-15. N2B2 inhibits IL-2- or IL-15-activated NK cell cytotoxicity against mouse fibrosarcoma L929 target cells.