Specific amyloid beta binding peptides and the use of same for treating and diagnosing alzheimer's dementia

A peptide specifically binding an amyloid beta species, said peptide comprising at least one amino acid sequence selected from the group consisting of SEQ ID NO:

• 1, SEQ ID NO:
• 2, SEQ ID NO:
• 3, SEQ ID 4, SEQ ID NO:
• 5, SEQ ID NO:
• 6, SEQ ID NO:
• 7, SEQ ID NO:
• 8, SEQ ID NO:
• 9, SEQ ID NO. 10, SEQ ID NO. 11, SEQ ID NO. 12, SEQ ID NO. 13, SEQ ID NO:
• 14, SEQ ID NO:
• 15, SEQ ID NO:
• 16, SEQ ID NO:
• 17, SEQ ID NO:
• 18, SEQ ID NO:
• 19, SEQ ID NO:
• 20, and/or SEQ ID NO:
• 21 and polymers of SEQ ID NO:
• 1, SEQ ID NO:
• 2, SEQ ID NO:
• 3, SEQ ID 4, SEQ ID NO:
• 5, SEQ ID NO:
• 6, SEQ ID NO:
• 7, SEQ ID NO:
• 8, SEQ ID NO:
• 9, SEQ ID NO. 10, SEQ ID NO. 11, SEQ ID NO. 12, SEQ ID NO. 13, SEQ ID NO:
• 14, SEQ ID NO:
• 15, SEQ ID NO:
• 16, SEQ ID NO:
• 17, SEQ ID NO:
• 18, SEQ ID NO:
• 19, SEQ ID NO:
• 20 and/or SEQ ID NO:
• 21.