Immunogen sequence: MVSSAKDTVA TQLSEAVDAT RGAVQSGVDK TKSVVTGGVQ SVMGSRLGQM VLSGVDTVLG KSEEWADNHL PLTDAELARI ATSLDGFDVA SVQQQRQEQS YFVRLGSLSE RLRQHAYEHS LGKLRATKQR AQEALLQLSQ VLSLMETVKQ GVDQKLVEGQ EKLHQMWLSW NQKQLQGPEK EPPKPEQVES RALTMFRDIA QQLQATCTSL GSS