Aggregation of Aβ(25-35) on mica.

<p>Topographic AFM images of Aβ(25-35) aggregates grown on mica. Images were acquired in tapping mode and in PBS. (a) After 6 hours, Aβ(25-35) forms a smooth homogeneous layer without any well-formed aggregates (3×3 µm², 2459×2459px²). (b) On a smaller scale the peptide tends to organize into a texture with some discernible protrusions (white ellipse) (500×500 nm², 1228×1228px²).