Immunogen sequence: MVGREKELSI HFVPGSCRLV EEEVNIPNRR VLVTGATGLL GRAVHKEFQQ NNWHAVGCGF RRARPKFEQV NLLDSNAVHH IIHDFQPHVI VHCAAERRPD VVENQPDAAS QLNVDASGNL AKEAAAVGAF LIYISSDYVF DGTNPPYREE DIPAPLNLYG KTKLDGEKAV LENNLGAAVL RIPILYGEVE KLEESAVTVM FDKVQFSNKS ANM