Immunogen sequence: LKAILTQQMS PSSLSALLSR QVPPDPVQVE EKLLPQPVIQ HDVEAEKQLI REEYEERLAR LKADYKAEQE SRARLEEDIT AMRNSYDVRL STLEENLRKE TEAVLQVGVL YKAEVMSRAE FASSAEYPPA FQYETVVKPK VFSTTDTLPS DDVSKTQVSS RFAELPKVEP SKSEISLGSS ESSSLEETSV SEAFPGPEEP SNVEVSMPTE ESR