Research Article

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

Figure 3

Typical AFM height images of collagen fibrils assembled on mica surface at 20 μg/mL collagen in the presence of different concentration of NaAc: (a) 50, (b) 100, (c) 200, and (d) 400 mM. Scale bar = 0.4 μm.