Fig. 1From: Regeneration of TiO2 Nanotube Arrays after Long-Term Cell and Tissue Culture for Multiple Use – an Environmental Scanning Electron Microscopy (ESEM) Survey of Adult Pig Retina and beyondESEM images of L929 mouse fibroblast cultured on top of customized nanotube arrays with a tube diameter of (32 ± 3) nm for different cultivation times: 1 day (a), 4 days (b) and 7 days (c). Scale bars correspond to 50 μmBack to article page