Immunogen sequence: EVERKNEELS VLLKAQQVES ERAQSDIEHL FQHNRKLESV AEEHEILTKS YMELLQRNES TEKKNKDLQI TCDSLNKQIE TVKKLNESLK EQNEKSIAQL IEKEEQRKEV QNQLVDREHK LANLHQKTKV QEEKIKTLQK EREDKEETID ILRKELSRTE QIRKELSIKA SSLEVQKAQL EGRLEEKESL VKLQQEELNK HSHMIAMIHS LSG