Immunogen sequence: EPVADKILQE LKCLSGQLDG YRGRPFPLAL LGWAPSNITF ALLFGRRFDY RDPVFVSLLG LIDEVMVLLG SPGLQLFNVY PWLGALLQLH RPVLRKIEEV RAILRTLLEA RRPHVCPGDP VCSYVDALIQ QGQGDDPEGL FAEANAVACT LDMVMAGTET TSATLQWAAL LMGRHPDVQG RVQEELDRVL GPGRTPRLED QQALPYTSAV LHE