Immunogen sequence: MTAPCPPPPP DPQFVLRGTQ SPVHALHFCE GAQAQGRPLL FSGSQSGLVH IWSLQTRRAV TTLDGHGGQC VTWLQTLPQG RQLLSQGRDL KLCLWDLAEG RSAVVDSVCL ESVGFCRSSI LAGGQPRWTL AVPGRGSDEV QILEMPSKTS VCALKPKADA KLGMPMCLRL WQADCSSRPL LLAGYEDGSV VLWDVSEQKV CSRIACHEEP VMD