Immunogen sequence: EQQKQTVQMR AQMPAFPLPY AQLQAMPAAG GVLYQPSGPA SFPSTFSPAG SVEGSPMHGV YMSQPAPAAG PYPSMPSTAA DPSMVSAYMY PAGATGAQAA PQAQAGPTAS PAYSSYQPTP TAGYQNVASQ APQSLPAISQ PPQSSTMGYM GSQSVSMGYQ PYNMQNLMTT LPSQDASLPP QQPYIAGQQP MYQQMAPSGG PPQQQPPVAQ QPQ