Immunogen sequence: MKSNPAIQAA IDLTAGAAGG TACVLTGQPF DTMKVKMQTF PDLYRGLTDC CLKTYSQVGF RGFYKGTSPA LIANIAENSV LFMCYGFCQQ VVRKVAGLDK QAKLSDLQNA AAGSFASAFA ALVLCPTELV KCRLQTMYEM ETSGKIAKSQ NTVWSVIKSI LRKDGPLGFY HGLSSTLLRE VPGYFFFFGG YELSRSFFAS GRSKDELGPV PLM