Immunogen sequence: APPSYEETVA VNSYYPTPPA PMPGPTTGLV TGPDGKGMNP PSYYTQPAPI PNNNPITVQT VYVQHPITFL DRPIQMCCPS CNKMIVSQLS YNAGALTWLS CGSLCLLGCI AGCCFIPFCV DALQDVDHYC PNC Highest antigen sequence identity to the following orthologs: Mouse - 87%, Rat - 89%. L