Immunogen sequence: MTQPTASGTL RVQQAGEMQN WAQVHGVLKG TNLFCYRQPE DADTGEEPLL TIAVNKETRV RAGELDQALG RPFTLSISNQ YGDDEVTHTL QTESREALQS WMEALWQLFF DMSQWKQCC Highest antigen sequence identity to the following orthologs: Mouse - 81%, Rat - 80%. This gene encodes