Immunogen sequence: MESVTFEDVA VEFIQEWALL DSARRSLCKY RMLDQCRTLA SRGTPPCKPS CVSQLGQRAE PKATERGILR ATGVAWESQL KPEELPSMQD LLEEASSRDM QMGPGLFLRM QLVPSIEERE TPLTREDRPA LQEPPWSLGC TGLKAAMQIQ RVVIPVPTLG HRNPWVARDS AVPARDPAWL QEDKVEEEAM APGLPTACSQ EPVTFADVAV VFT