Immunogen sequence: SGACLMKMPL NLKGENPLQL PIKCHFQRRH AKTNSHSSAL HVSYKTPCGR SLRNVEEVFR YLLETECNFL FTDNFSFNTY VQLARNYPKQ KEVVSDVDIS NGVESVPISF CNEIDSRKLP QFKYRKTVWP RAYNLTNFSS MFTDSCDCSE GCIDITKCAC LQLTARNAKT SPLSSDKITT GYKYKRLQRQ IPTGIYECSL LCKCNRQLCQ NRV