Fluorescence images of human gingival fibroblasts populating the gel type and the sponge type scaffolds.

<p>Fluorescence microscopy shows DiI-labeled human gingival fibroblasts populating the gel type and the sponge type scaffolds. Images from days 1, 4, and 14 are shown. White arrows indicate the cells at the migration front. The border of the scaffoldss is indicated by a red line. The white boxes show the regions of interest (0.75 mm²), starting at the border of the scaffolds, where quantification of cell numbers and migration distance was performed. The region was 0.5 mm high and 1.5 mm wide. The photos were colorized using Adobe Illustrator. The white bar represents 500 µm.