Immunogen sequence: ITGHSYVVYG PLCNGATSVL FESTPVYPNA GRYWETVERL KINQFYGAPT AVRLLLKYGD AWVKKYDRSS LRTLGSVGEP INCEAWEWLH RVVGDSRCTL VDTWWQTETG GICIAPRPSE EGAEILPAMA MRPFFGIVPV LMDEKGSVVE GSNVSGALCI SQAWPGMART IYGDHQRFVD AYFKAYPGYY FTGDGAYRTE GGYYQITGRM DDV