Alignment of the sequences of β-Amyloid (Aβ) compared with the AChE C-terminus peptides of 30 amino acids (T30), 14 amino acids (T14), and the residual 15 amino acid sequence between the two (T15).

<p>Note homology between the 9 amino acid sequence (9AA) possible in human plasma and T14, T30 and Aβ (shaded panels), but not T15.