Fig. 6From: Collagen and fibronectin surface modification of nanoporous anodic alumina and macroporous silicon for endothelial cell culturesCell spreading and filopodia formation of HAEC. AFM images of HAECs at D2. Two-dimensional images of PSi-Fn (a) and NAA-Fn substrates (b). Three-dimensional images of PSi-Fn (c) and NAA-Fn substrates (d)Back to article page