In direct ELISAs and Western blots, this antibody does not cross-react with recombinant human (rh) CD31, rhICAM-1, -2, -3, recombinant mouse MAdCAM-1, or rhVCAM-1. Reconstitute at 0.5 mg/mL in sterile PBS. CEACAM1 is a member of the carcinoembryonic anti