Immunogen sequence: AWLERTMRSV GLEVYTQSFS RKLPFPDETH ERYMVSGTNV YGILRAPRAA STESLVLTVP CGSDSTNSQA VGLLLALAAH FRGQIYWAKD IVFLVTEHDL LGTEAWLEAY HDVNVTGMQS SPLQGRAGAI QAAVALELSS DVVTSLDVAV EGLNGQLPNL DLLNLFQTFC QKGGLLCTLQ GKLQPEDWTS LDGPLQGLQT LLLMVLRQAS GRP