Immunogen sequence: MAQLGKLLKE QKYDRQLRLW GDHGQEALES AHVCLINATA TGTEILKNLV LPGIGSFTII DGNQVSGEDA GNNFFLQRSS IGKNRAEAAM EFLQELNSDV SGSFVEESPE NLLDNDPSFF CRFTVVVATQ LPESTSLRLA DVLWNSQIPL LICRTYGLVG YMRIIIKEHP VIESHPDNAL EDLRLDKPFP ELREHFQSYD LDHMEKKDHS HTP