In direct ELISAs, approximately 30% cross-reactivity with recombinant mouse (rm) Semaphorin 3E is observed and less than 10% cross-reactivity with rmSemaphorin 3A, rmSemaphorin 3B, rmSemaphorin 3C, rmSemaphorin 3F, and recombinant human (rh) Semaphorin 3