Research Article

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

Figure 5

Typical AFM height images of collagen fibrils assembled on mica surface at 20 μg/mL collagen in the presence of different concentration of CaAc2: (a) 100, (b) 200, (c) 300, and (d) 400 mM. Scale bar = 0.4 μm.