Immunogen sequence: MEVMEGPLNL AHQQSRRADR LLAAGKYEEA ISCHKKAAAY LSEAMKLTQS EQAHLSLELQ RDSHMKQLLL IQERWKRAQR EERLKAQQNT DKDAAAHLQT SHKPSAEDAE GQSPLSQKYS PSTEKCLPEI QGIFDRDPDT LLYLLQQKSE PAEPCIGSKA PKDDKTIIEE QATKIADLKR HVEFLVAENE RLRKENKQLK AEKARLLKGP IEK