Immunogen sequence: MHHQQRMAAL GTDKELSDLL DFSAMFSPPV SSGKNGPTSL ASGHFTGSNV EDRSSSGSWG NGGHPSPSRN YGDGTPYDHM TSRDLGSHDN LSPPFVNSRI QSKTERGSYS SYGRESNLQG CHQQSLLGGD MDMGNPGTLS PTKPGSQYYQ YSSNNPRRRP LHSSAMEVQT KKVRKVPPGL PSSVYAPSAS TADYNRDSPG YPSSKPATST Pos