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Characterization of hNCs-2D and hNCs-3D in collagen. Images of hNCs stained with type II collagen (COL2A1), sex-determining region Y (SRY)-box 9 (SOX9) and Aggrecan (ACAN) antibodies are shown. A hNCs-2D in collagen. B hNCs-3D in collagen. Scale bars: 100 μm
