Immunogen sequence: VKKLLEMLQE WLASLPLDRI PYNAVLDLVN NKMRISGIFL TNHIKWVGCQ GSRSELRGYP CSLWKLFHTL TVEASTHPDA LVGTGFEDDP QAVLQTMRRY VHTFFGCKEC GEHFEEMAKE SMDSVKTPDQ AILWLWKKHN MVNGRLAGHL SEDPRFPKLQ WPTPDLCPAC HEEIKGLASW DEGHVLTFLK QHYGRDNLLD TYSADQGDSS EGG