Immunogen sequence: ASQLERCKLG SETGSMSSMS SAEEQFQWQS QDGQKDIEDE LTTGLELVDS CIRSLQESGI LDPQDYSTGE RPSLLSQSAL QLNSKPEGSF QYPASYHSNQ TLALGETTPS QLPARGTQAR ATGQSFSQGT TSRA Highest antigen sequence identity to the following orthologs: Mouse - 93%, Rat - 92%.