Research Article

Cation-Specific Effects on the Self-Assembly of Collagen Molecules Mediated by Acetate on Mica Surface Observed with Atomic Force Microscopy

Figure 2

Typical AFM height images of collagen fibrils assembled on mica surface at 20 μg/mL collagen in the presence of different concentrations of KAc: (a) 25, (b) 50, (c) 100, and (d) 300 mM. Scale bar = 0.4 μm.