In direct ELISAs, less than 2% cross-reactivity with recombinant rat ROBO1, recombinant human (rh) ROBO2, and rhROBO3 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 LAL method. Receptor fo