Immunogen sequence: MSAPLDAALH ALQEEQARLK MRLWDLQQLR KELGDSPKDK VPFSVPKIPL VFRGHTQQDP EVPKSLVSNL RIHCPLLAGS ALITFDDPKV AEQVLQQKEH TINMEECRLR VQVQPLELPM VTTIQVMMSS QLSGRRVLVT GFPASLRLSE EELLDKLEIF FGKTRNGGGD VDVRELLPGS VMLGFARDGV AQRLCQIGQF TVPLGGQQVP LRV