Immunogen sequence: MPAYFQRPEN ALKRANEFLE VGKKQPALDV LYDVMKSKKH RTWQKIHEPI MLKYLELCVD LRKSHLAKEG LYQYKNICQQ VNIKSLEDVV RAYLKMAEEK TEAAKEESQQ MVLDIEDLDN IQTPESVLLS AVSGEDTQDR TDRLLLTPWV KFLWESYRQC LDLLRNNSRV ERLYHDIAQQ AFKFCLQYTR KAEFRKLCDN LRMHLSQIQR HHN