Immunogen sequence: YHLGCFCCCV CERQLRKGDE FVLKEGQLLC KGDYEKEKDL LSSVSPDESD SVKSEDEDGD MKPAKGQGSQ SKGSGDDGKD PRRPKRPRTI LTTQQRRAFK ASFEVSSKPC RKVRETLAAE TGLSVRVVQV WFQNQRAKMK KLARRHQQQQ EQQNSQRLGQ EVLSSRMEGM MASYTPLAPP QQQIVAMEQS PYGSSDPFQQ GLTPPQMPGN DSI