Immunogen sequence: ELSSEVQSLW SKAADLFESE GAKVIEVSLP HTSYSIVCYH VLCTSEVASN MARFDGLQYG HRCDIDVSTE AMYAATRREG FNDVVRGRIL SGNFFLLKEN YENYFVKAQK VRRLIANDFV NAFNSGVDVL LTPTTLSEAV PYLEFIKEDN RTRSAQDDIF TQAVNMAGLP AVSIPVALSN QGLPIGLQFI GRAFCDQQLL TVAKWFEKQV QFP