Immunogen sequence: ECGRSEIDEL IKEPSVDDYM GMIKRSPSPP EACRSQLLPD WWAQQPSTGV PLVTGYTTYD AHHSAFSQMV ISFYYGGKLV GQATTTCPEG CRLSLSQPGL PGTKLYGPEG LELVRFPPAD AIPSERQRQV TRKLFGHLER GVLLHSSRQG VFVKRLCQGR VFCSGNAVVC KGRPNKLERD EVVQVFDTSQ FFRELQQFYN SQGRLPDGRV VLC