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. 2014 Mar 11;15(3):4299–4317. doi: 10.3390/ijms15034299

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© 2014 by the authors; licensee MDPI, Basel, Switzerland

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 5. — Actin fluorescent staining to study the cell alignment and cytoskeletal rearrangement of HepG2 cells cultured for 12 h on (A) RGD-TiO₂ nanogratings compared to (B) TiO₂ nanopattern alone, on which the actin filaments are arranged parallel to the TiO₂ nanofeatures (C) RGD-TiO₂ flat surface and (D) Flat surface alone or control.