Immunogen sequence: MSSLPGCIGL DAATATVESE EIAELQQAVV EELGISMEEL RHFIDEELEK MDCVQQRKKQ LAELETWVIQ KESEVAHVDQ LFDDASRAVT NCESLVKDFY SKLGLQYRDS SSEDESSRPT EIIEIPDEDD DVLSIDSGDA GSRTPKDQKL REAMAALRKS AQDVQKFMDA VNKKSSSQDL HKGTLSQMSG ELSKDGDLIV SMRILGKKRT KTW