Induces neurite outgrowth in specific adult neurons in vitro (PubMed:10964941). Albumen gland. Up-regulated in adult CNS after axotomy. Expressed throughout embryonic development, in the juvenile CNS, but not in the normal adult. Reduced with 2-mercaptoethanol. Reduced with 2-mercaptoethanol and alkylated with 4-vinylpyridine.