Immunogen sequence: RFHNCLIQLY CEKVQGLMKE YLLSFPAGKT PVPAGEEEGE LGEYRQKLLM FLEISSYYDP GRLICDFPFD GLLEERALLL GRMGKHEQAL FIYVHILKDT RMAEEYCHKH YDRNKDGNKD VYLSLLRMYL SPPSIHCLGP IKLELLEPKA NLQAALQVLE LHHSKLDTTK ALNLLPANTQ INDIRIFLEK VLEENAQKKR FNQVLKNLLH AEF