Immunogen sequence: SPEVPKLNVT VQDQEEHRCR EGALSLLQHL RPHWDPQEVT LQLFTDGITN KLIGCYVGNT MEDVVLVRIY GNKTELLVDR DEEVKSFRVL QAHGCAPQLY CTFNNGLCYE FIQGEALDPK HVCNPAIFRL IARQLAKIHA IHAHNGWIPK SNLWLKMGKY FSLIPTGFAD EDINKRFLSD IPSSQILQEE MTWMKEILSN L. Ethanolamin