Immunogen sequence: LMADAQRQDR PFFLYYASHH THYPQFSGQS FAERSGRGPF GDSLMELDAA VGTLMTAIGD LGLLEETLVI FTADNGPETM RMSRGGCSGL LRCGKGTTYE GGVREPALAF WPGHIAPGVT HELASSLDLL PTLAALAGAP LPNVTLDGFD LSPLLLGTGK SPRQSLFFYP SYPDEVRGVF AVRTGKYKAH FFTQGSAHSD TTADPACHAS SSL