In direct ELISAs, approximately 5% cross-reactivity with recombinant mouse (rm) Frizzled-9 is observed and less than 1% cross-reactivity with rmFrizzled-1, rmFrizzled-2, rmFrizzled-3, rmFrizzled-4, rmFrizzled-6, and rmFrizzled-7 is observed. Reconstitute