Immunogen sequence: WQYLGTTQAE NEQELLAISA LRRCLELKPD NQTALMALAV SFTNESLQRQ ACETLRDWLR YTPAYAHLVT PAEEGAGGAG LGPSKRILGS LLSDSLFLEV KELFLAAVRL DPTSIDPDVQ CGLGVLFNLS GEYDKAVDCF TAALSVRPND YLLWNKLGAT LANGNQSEEA VAAYRRALEL QPGYIRSRYN LGISCINLGA HREAVEHFLE ALN