Fig. 5.

Transmission electron micrographs of tendon constructs. (A)–(D) transverse sectioned micrographs. (A) The image demonstrates the uniformity of collagen fibrils with a narrow diameter. Bar: 2 μm. (B) Tendon fibroblasts in close proximity and collagen fibrils in the extracellular space. In the intracellular space, mitochondria, the Golgi apparatus and the nucleus can be identified. Bar: 1 μm. (C) Collagen fibrils in the extracellular space are visible and collagen fibrils within fibripositors clearly identifiable. Fibripositors are indicated by arrows. Bar: 500 nm. (D) Collagen fibril in fibripositors at high magnification. Bar: 200 nm. G: Golgi apparatus, Fp: fibripositors, M: mitochondrion, N: nucleus.