Immunogen sequence: LCCTLQLREE FKQEVEATAG LLYVDDPNWS GIGVVRYEHA NDDKSSLKSD PEGENIHAGL LKKLNELESD LTFKIGPEYK SMKSCLYVGM ASDNVDAAEL VETIAATARE IEENSRLLEN MTEVVRKGIQ EAQVELQKAS EERLLEEGVL RQIPVVGSVL NWFSPVQALQ KGRTFNLTAG SLESTEPIYV YKAQGAGVTL PPTPSGSRTK QRL