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Fluorescence microscopy images of increased endothelial cell densities after 4 h on A) 0.01 mg/mL RNT–K coated on titanium and B) 0.001 mg/mL RNT–K coated on titanium compared to C) uncoated titanium. Dots in the images represent DAPI-stained endothelial cell nuclei. Scale bars = 50 μm (left), 40 μm (middle), and 50 μm (right).
Abbreviations: DAPI, 4′,6-diamidino-2-phenylindole; RNT–K, rosette nanotube–lysine side chain.
