Immunogen sequence: TAWRCYAAEN PDSSTWKIYI RKAPRSHTLL SPSPKPKKSV VVKKKKFKLD KDNGVTPGEK MLTVPHITCD PPEERRLDHF SVDGYDSSVR KSPTLLEVSM PHFMRTNSFA EDLDLEGETL LTPITHISQL REHHRATIKV IRRMQYFVAK KKFQQARKPY DVRDVIEQYS QGHLNLMVRI KELQRRLDQS IGKPSLFISV SEKSKDRGSN TIG