Immunogen sequence: RGKTQKVTLN VHSEYEPSWE EQPMPETPKW FHLPYLFQMP AYASSSKFVT RVTTPAQRGK VPPVHHSSPT TQITHRPRVS RASSVAGDKP RTFLPSTTAS KISALEGLLK PQTPSYNHHT RLHRQRALDY GSQSGRE Highest antigen sequence identity to the following orthologs: Mouse - 48%, Rat - 45