Immunogen sequence: QPIWIGLHDP QKRQQWQWID GAMYLYRSWS GKSMGGNKHC AEMSSNNNFL TWSSNECNKR QHFLCKYRP Highest antigen sequence identity to the following orthologs: Mouse - 57%, Rat - 59%. Reg IV is part of the regenerating gene family within the C-type lectin