Immunogen sequence: MDPALAAQMS EAVAEKMLQY RRDTAGWKIC REGNGVSVSW RPSVEFPGNL YRGEGIVYGT LEEVWDCVKP AVGGLRVKWD ENVTGFEIIQ SITDTLCVSR TSTPSAAMKL ISPRDFVDLV LVKRYEDGTI SSNATHVEHP LCPPKPGFVR GFNHPCGCFC EPLPGEPTKT NLVTFFHTDL SGYLPQNVVD SFFPRSMTRF YANLQKAVKQ FHE