In direct ELISAs, less than 1% cross-reactivity with recombinant mouse (rm) Plexin A1, rmPlexin A2, recombinant human (rh) Plexin A4, rhPlexin B1, rhPlexin B3, rhPlexin C1 and rhPlexin D1 is observed. Reconstitute at 0.2 mg/mL in sterile PBS. Plexin-B2 i