Immunogen sequence: MPCGEDWLSH PLGIVQGFFA QNGVNPDWEK KVIEYFKEKL KENNAPKWVP SLNEVPLHYL KPNSFVKFRC MIQDMFDPEF YMGVYETVNQ NTKAHVLHFG KYRDVAECGP QQELDLNSPR NTTLERQTFY CVPVPGESTW VKEAYVNANQ ARVSPSTSYT PSRHKRSYED DDDMDLQPNK QKDQHAGARQ AGSVGGLQWC GEPKRLETEA STG