Immunogen sequence: LVNEPYYNEA GFDSDRGLQE GYENSRCYNE MALIRVVQSM TQLVRRPPEV FEQEIRQHFS TGGWRLVNRI ESWLETHALL EKAQALPNGV PKASSSPEPP AVAELSDSGQ QEPEDGGPAP GEASQGSDSE GGAQGLASAS RDHTDQTSET APDASVPPSV KPKKRRKSYR SFLPEKSGYP DIGFPLFPLS KGFIKSIRGV LTQFRAALLE AGM