Immunogen sequence: QIYRIDHYLG KEMVQNLMVL RFANRIFGPI WNRDNIACVI LTFKEPFGTE GRGGYFDEFG IIRDVMQNHL LQMLCLVAME KPASTNSDDV RDEKVKVLKC ISEVQANNVV LGQYVGNPDG EGEATKGYLD DPTVPRGSTT ATFAAVVLYV ENERWDGVPF ILRCGKALNE RKAEVRLQFH DVAGDIFHQQ CKRNELVIRV QPNEAVYTKM MTK