Fig. 2
From: Modulated nanowire scaffold for highly efficient differentiation of mesenchymal stem cells
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12951-022-01488-5/MediaObjects/12951_2022_1488_Fig2_HTML.jpg)
MSCs adopt a contracted shape after 2 days of culture. Scanning electron micrographs of MSCs cultured on the NW scaffold (a), with focal adhesion points forming around the NWs (b). Representative images of approximately 20 cells. c F-actin fluorescence staining of MSCs on the NW scaffold. The cell area is of 1628 ± 145 µm2, as determined by F-actin staining (n = 50 cells). d Immunofluorescence staining of the focal adhesion protein vinculin. Arrows in a denote filopodia around the cell periphery; arrows in c and d denote the aggregation of actin and vinculin in highly localized spots, respectively.