Successful Low-Cost Scaffold-Free Cartilage Tissue Engineering Using Human Cartilage Progenitor Cell Spheroids Formed by Micromolded Nonadhesive Hydrogel

Figure 7

The CPC spheroids retained their fusion capacity even after spontaneous chondrogenesis. The CPC spheroids maintained for 2 days (a–c) and 21 days (d–f) in cell spheroid culture retained their fusion capacity. The CPC spheroids in close contact after 1 hour (a, d), 1 day (b, e) and 7 days (c, f). Note a complete fusion in c. Phase contrast microscopy. Bar size: 400 μm.

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