Figure 6.

A: phase contrast microscopy of collagen-I-fibrin gel: 24 hours after seeding the cells (arrow-heads) and gel formation, some of the cells are already spread out (arrows), 100× B-C: SEM of the collagen-I fibrin gel after 10 days in culture media, 5000× (B) and 25.000× (C) after fixation for SEM and drying procedure the gel showed micro fibrils forming a sponge-like structure.

Beier et al. BMC Biotechnology 2009 9:34   doi:10.1186/1472-6750-9-34
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