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. Author manuscript; available in PMC: 2016 Jul 14.
Published in final edited form as: ACS Biomater Sci Eng. 2016 Feb 25;2(4):643–651. doi: 10.1021/acsbiomaterials.6b00036

Figure 4.

Figure 4

Representative SEM images of aligned collagen scaffolds critical point dried in the hydrated state. (A) Aligned topographical features are preserved in the hydrated state observed at 50×. (B) Folds and ridges of individual features are aligned in the same direction as other scaffold features observed at 1300×. (C) The surface of collagen scaffolds shows evidence of a randomly oriented, fibrillar topography at high magnification. Panels B and C are high magnification frames of panel A. (D) Representative image showing randomly oriented, fibrillar topography on the surface of a separate collagen scaffold.