Immunogen sequence: SKTSPVTQQP QQKVLGSREL PPPEDDQLHS SAPRSSWKER ILKAKVVTVS QEAEWDQIEP LLRSELEDFP VLGIDCEWER HGTYLQWLF Highest antigen sequence identity to the following orthologs: Mouse - 60%, Rat - 58%. Exonuclease that has both 3'-5' exoribonuclease an