In direct ELISAs, approximately 15% cross-reactivity with recombinant mouse (rm) Frizzled-2 and less than 5% cross-reactivity with rmFrizzled-3, rmFrizzled-4, rhFrizzled-5, rmFrizzled-6, rmFrizzled-8, and rmFrizzled-9 is observed. Reconstitute at 0.2 mg/