Immunogen sequence: LLHVNDDLNN VFLRYERFER YRSGRSVQNA SNGVLNEVTE DNLIDLGPGS PAVVSPMVGN TAPPSSLSSQ LAGLDLGTES VSGTLSSLQQ CNPRDGF Highest antigen sequence identity to the following orthologs: Mouse - 96%, Rat - 96%. This gene belongs to a small gene family