Fig. 8From: Mesenchymal stem cells and myoblast differentiation under HGF and IGF-1 stimulation for 3D skeletal muscle tissue engineeringCultivation of MSC-myoblast co-cultures on PCL-collagen-I nanofiber scaffolds. a-b SEM images of parallel-orientated PCL-collagen-I nanofiber scaffold cell attachments. c-d Parallel orientation of MSCs (green) on PCL-collagen-I nanofibers. e Positive staining for desmin (red) of MSC-myoblast co-cultures on PCL-collagen scaffolds. Nuclei were counterstained with DAPI (blue). Scale bars represent 200 and 100 μm. Magnifications 40x (c, e) and 100x (d)Back to article page