Immunogen sequence: FVGKVCMDLN DTFPEYKETT EESIKETERF VSEMLQKNYS RVKPIVTPRF SLSCSETLMG ELGNIAKTRD LHIQSHISEN RDEVEAVKNL YPSYKNYTSV YDKNNLLTNK TVMAHGCYLS AEELNVFHER GASIAHCPNS NLSLSSGFLN VLEVLKHEVK IGLGTDVAGG YSYSMLDAIR RAVMVSNILL INKVNEKSLT LKEVFRLATL GGS