Immunogen sequence: LPADTCLLEF ARLVRGLGLK PEKLEKDLDR YSERARMKGG EKIGIAEFAA SLEVPVSDLL EDMFSLFDES GSGEVDLREC VVALSVVCRP ARTLDTIQLA FKMYGAQEDG SVGEGDLSCI LKTALGVAEL TVTDLFRAID QEEKGKITFA DFHRFAEMYP AFAEEYLYPD QTHFESCAET SPAPIPNGFC ADFSPENSDA GRKPVRKKLD; Po