Immunogen sequence: MSWASCLAFH REEKTYIHII DQRTRQPVQT KFYTDAMVVF HHVNAYEEDG CIVFDVIAYE DNSLYQLFYL ANLNQDFKEN SRLTSVPTLR RFAVPLHVDK NAEVGTNLIK VASTTATALK EEDGQVYCQP EFLYEGLELP RVNYAHNGKQ YRYVFATGVQ WSPIPTKIIK YDILTKSSLK WREDDCWPAE PLFVPAPGAK DEDDGVILSA IVS