Immunogen sequence: MDDEEETYRL WKIRKTIMQL CHDRGYLVTQ DELDQTLEEF KAQFGDKPSE GRPRRTDLTV LVAHNDDPTD QMFVFFPEEP KVGIKTIKVY CQRMQEENIT RALIVVQQGM TPSAKQSLVD MAPKYILEQF LQQELLINIT EHELVPEHVV MTKEEVTELL ARYKLRENQL PRIQAGDPVA RYFGIKRGQV VKIIRPSETA GRYITYRLVQ; Po