Immunogen sequence: MAAGGDHGSP DSYRSPLASR YASPEMCFVF SDRYKFRTWR QLWLWLAEAE QTLGLPITDE QIQEMKSNLE NIDFKMAAEE EKRLRHDVMA HVHTFGHCCP KAAGIIHLGA TSCYVGDNTD LIILRNALDL LLPKLARVIS RLADFAKERA SLPTLGFTHF QPAQLTTVGK RCCLWIQDLC MDLQNLKRVR DDLRFRGVKG TTGTQASFLQ LFE