Immunogen sequence: MAPKKRPETQ KTSEIVLRPR NKRSRSPLEL EPEAKKLCAK GSGPSRRCDS DCLWVGLAGP QILPPCRSIV RTLHQHKLGR ASWPSVQQGL QQSFLHTLDS YRILQKAAPF DRRATSLAWH PTHPSTVAVG SKGGDIMLWN FGIKDKPTFI KGIGAGGSIT GLKFNPLNTN QFYASSMEGT TRLQDFKGNI LRVFASSDTI NIWFCSLDVS ASS