Immunogen sequence: MATPPKRSCP SFSASSEGTR IKKISIEGNI AAGKSTFVNI LKQLCEDWEV VPEPVARWCN VQSTQDEFEE LTMSQKNGGN VLQMMYEKPE RWSFTFQTYA CLSRIRAQLA SLNGKLKDAE KPVLFFERSV YSDRYIFASN LYESECMNET EWTIYQDWHD WMNNQFGQSL ELDGIIYLQA TPETCLHRIY LRGRNEEQGI PLEYLEKLHY KHE