Immunogen sequence: LKVNGPSQPI LVRVGEDIQL TCYLSPKANA QSMEVRWDRS HRYPAVHVYM DGDHVAGEQM AEYRGRTVLV SDAIDEGRLT LQILSARPSD DGQYRCLFEK DDVYQEASLD LKVVSLGSSP LITVEGQEDG EMQPMCSSDG WFPQPHVPWR DMEGKTIPSS SQALTQGSHG LFHVQTLLRV TNISAVDVTC SISIPFLGEE KIATFSLSGW. BT