Research Article

Surface Modification of Titanium with Heparin-Chitosan Multilayers via Layer-by-Layer Self-Assembly Technique

Figure 6

AFM images of sample surfaces: NaOH-treated titanium (Ti-OH) ((a), (c)) and coated titanium (Ti/PLL/(Hep/Chi)18) ((b), (d)). The image size is 5  m × 5  m ((a), (b)) and 2  m × 2  m ((c), (d)).
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(a)
423686.fig.006b
(b)
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(c)
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(d)