Immunogen sequence: RHNLISRFKI PTVFLMSFLD ALETGYGKYK NPYHNQIHAA DVTQTVHCFL LRTGMVHCLS EIELLAIIFA AAIHDYEHTG TTNSFHIQTK SECAIVYNDR SVLENHHISS VFRLMQDDEM NIFINLTKDE FVELRALVIE MVLATDMSCH FQQVKTMKTA LQQLERIDKP KALSLLLHAA DISHPTKQWL VHSRWTKALM EEFFRQGDKE AEL