Immunogen sequence: WAHDLPGLFE QRRLQQQVPL SIPTNRLTQR IIPRRFALST KIPDTKGCLQ CRVVRNPYTG ATFLLAALPT SLLLLQWYEP LQKFLLLKNF SSPLPSPAGM LEPLVLDGKE LPQVCVGAEG PEGPGCRVLF HVLPLEAGLT PDILIPPEGI PGSAQQVIQV DRDTILVSFE RCVRIVNMQG EPTATLAPEL TFDFPIETVV CLQDSVLAFW SHG