Immunogen sequence: MEFVKCLGHP EEFYNLVRFR IGGKRKVMPK MDQDSLSSSL KTCYKYLNQT SRSFAAVIQA LDGEMRNAVC IFYLVLRALD TLEDDMTISV EKKVPLLHNF HSFLYQPDWR FMESKEKDRQ VLEDFPTISL EFRNLAEKYQ TVIADICRRM GIGMAEFLDK HVTSEQEWDK YCHYVAGLVG IGLSRLFSAS EFEDPLVGED TERANSMGLF LQK