Immunogen sequence: FGKKHKWIQI DVTSLLQPLV ASNKRSIHMS INFTCMKDQL EHPSAQNGLF NMTLVSPSLI LYLNDTSAQA YHSWYSLHYK RRPSQGPDQE RSLSAYPVGE EAAEDGRSSH HRHRRGQETV SSELKKPLGP ASFNLSEYFR QFLLPQNECE LHDFRLSFSQ LKWDNWIVAP HRYNPRYCKG DCPRAVGHRY GSPVHTMVQN IIYEKLDSSV PRP