In sandwich ELISAs, less than 0.1% cross-reactivity with recombinant mouse (rm) 4-1BB, recombinant human (rh) NGF R, rhTNF RI and rhTNF RII is observed. Reconstitute at 0.2 mg/mL in sterile PBS. Endoxin level is <0.10 EU per 1 μg of the antibody by the L