Immunogen sequence: DASNPDPAPKA KKIKSQHRPT QRFWPNSIAA GVLQQQGGAP GTNPDGSINL DNLQSLS Highest antigen sequence identity to the following orthologs - mouse 98%, rat 98%. PREP-2 (Pbx-regulating protein-2), also known as PBX/knotted 1 homeobox 2 or PKNOX2, is