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. Author manuscript; available in PMC: 2013 Jul 23.
Published in final edited form as: Integr Biol (Camb). 2011 Oct 13;3(12):1153–1166. doi: 10.1039/c1ib00073j

Fig. 5.

Fig. 5

Structural and elastic properties of cell-free collagen-I gels untreated or treated with exogenous collagenase. (A) Representative confocal sections of collagen filaments obtained by CRM corresponding to an untreated or a collagenase treated (up to 60 min) 3 mg ml−1 collagen-I gel. Scale bars correspond to 5 μm. (B) E of untreated or collagenase treated collagen-I gels measured by AFM. **P < 0.01. (C) E of different concentrations of cell-free collagen-I gels measured by AFM. Data were fitted to semiflexible polymer models corresponding to semi-diluted (red) or concentrated (blue) gels.