Immunogen sequence: RILPEVKVEG ELGGSVTIKC PLPEMHVRIY LCREMAGSGT CGTVVSTTNF IKAEYKGRVT LKQYPRKNLF LVEVTQLTES DSGVYACGAG MNTDRGKTQK VTLNVHSEYE PSWEEQPMPE TPKWFHLPYL FQMPAYASSS KFVTRVTTPA QRGKVPPVHH SSPTTQITHR PRVSRASSVA GDKPRTFLPS TTASKISALE GLLKPQTPSY NHH