Patent ID: 8022180

Claim:
An isolated or purified peptide consisting of 6 to 15 contiguous amino acid residues and containing an amino acid sequence selected from the group consisting of DAEFRWP (SEQ ID NO: 27), DNEFRSP (SEQ ID NO: 28), SAEFRTQ (SEQ ID NO: 31), SAEFRAT (SEQ ID NO: 32), SWEFRNP (SEQ ID NO: 33), SWEFRLY (SEQ ID NO: 34), SWELRQA (SEQ ID NO: 35), SVEFRYH (SEQ ID NO: 36), SYEFRHH (SEQ ID NO: 37), SQEFRTP (SEQ ID NO: 38), SSEFRVS (SEQ ID NO: 39), DWEFRD (SEQ ID NO: 40), DAELRY (SEQ ID NO: 41), DWELRQ (SEQ ID NO: 42), SLEFRF (SEQ ID NO: 43), GPEFRW (SEQ ID NO: 44), and GKEFRT, wherein said peptide has a binding capacity to an antibody being specific for the N-terminal Aβ42 sequence DAEFH (SEQ ID NO: 26).