Immunogen sequence: MGNASFGSKE QKLLKRLRLL PALLILRAFK PHRKIRDYRV VVVGTAGVGK STLLHKWASG NFRHEYLPTI ENTYCQLLGC SHGVLSLHIT DSKSGDGNRA LQRHVIARGH AFVLVYSVTK KETLEELKAF YELICKIKGN NLHKFPIVLV GNKSDDTHRE VALNDGATCA MEWNCAFMEI SAKTDVNVQE LFHMLLNYKK KPTTGLQEPE KKS