Immunogen sequence: HRPELPPVCR ARPRACSHLI RLMQRCWQGD PRVRPTFQEI TSETEDLCEK PDDEVKETAH DLDVKSPPEP RSEVVPARLK RASAPTFDND YSLSELLSQL DSGVSQAVEG PEELSRSSSE SKLPSSGSGK RLSGVSSVDS AFSSRGSLSL SFEREPSTSD LGTTDVQKKK LVDAIVSGDT SKLMKILQPQ DVDLALDSGA SLLHLAVEAG QEE