Immunogen sequence: MAATVNLELD PIFLKALGFL HSKSKDSAEK LKALLDESLA RGIDSSYRPS QKDVEPPKIS STKNISIKQE PKISSSLPSG NNNGKVLTTE KVKKEAEKRP ADKMKSDITE GVDIPKKPRL EKPETQSSPI TVQSSKDLPM ADLSSFEETS ADDFAMEMGL ACVVCRQMMV ASGNQLVECQ ECHNLYHRDC HKPQVTDKEA NDPRLVWYCA RCT