Immunogen sequence: MTSPHFSSYD EGPLDVSMAA TNLENQLHSA QKNLLFLQRE HASTLKGLHS EIRRLQQHCT DLTYELTVKS SEQTGDGTSK SSELKKRCEE LEAQLKVKEN ENAELLKELE QKNAMITVLE NTIKEREKKY LEELKAKSHK LTLLSSELEQ RASTIAYLTS QLHAAKKKLM SSSGTSDASP SGSPVLASYK PAPPKDKLPE TPRRRMKKSL SAP