Immunogen sequence: QGNFFSFLPV LNWASMHRTQ RVDDPQDVFK PTTSRLKQPL QGDSEAFPWH WMSGVEQQVA SLSGQCHHHG ENLRELTTLL QKLQARVDQM EGGAAGPSAS VRDAVGQPPR ETDFMAFHQE HEVRMSHLED ILGKLR Highest antigen sequence identity to the following orthologs: Mouse - 51%, Rat - 50%