Immunogen sequence: GPTHLFQPSL VLDMAKVLLD NYCFPENLLG MQEAIQQAIK SHEILSISDP QTLASVLTAG VQSSLNDPRL VISYEPSTPE PPPQVPALTS LSEEELLAWL QRGLRHEVLE GNVGYLRVDS VPGQEVLSMM GEFLVAHVWG NLMGTSALVL DLRHCTGGQV SGIPYIISYL HPGNTILHVD TIYNRPSNTT TEIWTLPQVL GERYGADKDV VVL