Figure 8From: Collagen matrices from sponge to nano: new perspectives for tissue engineering of skeletal muscleSEM of unorientated collagen-I-nanofibers. A: nanofibers without cells, the fibers show a more flattened structure with smaller pore sizes than orientated nanofibers, 5000×. B: nanofibers 3 days after seeding (arrows: cells), 1000×.Back to article page