Immunogen sequence: RLSSLNLTNQ ALNKNFNDLC ENLLKSLYFK LRSMIPCCLC HVNFTVSLPE DELIQVTVTA VAITFDKNQA LQTTKTPVEK SLQRASTDNE ELLQFPLELC SDSLPSHPFP PAKEHLESAS SNSGIPAAQR ATSVDYSSFA DRCSSWIELI KLKAQTIRRG SIKTTMTVEK ASPVGDGNFR NRSAPPCANS TVGVVKMTPL SFIPGAKITK YLG