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. Author manuscript; available in PMC: 2013 Sep 1.
Published in final edited form as: Biotechnol Bioeng. 2012 Apr 8;109(9):2357–2368. doi: 10.1002/bit.24488

Figure 2.

Figure 2

Human chondrocyte proliferation within printed 3D cell-laden PEG hydrogel constructs. A: Cell proliferation within PEG hydrogel treated with TGF-β1 (white bars), FGF-2 (grey bars), and FGF-2/TGF-β1 (black bars) for the first week, then TGF-β1 for all groups. B, C: Confocal images of Calcein AM stained cells treated with FGF-2/TGF-β1 (B) and TGF-β1 only (C) after two weeks in culture. The dividing cells were marked with arrows. Asterisks indicate statistical significance between assigned groups (* p < 0.05) (n = 3). Scale bars: B, C = 100 μm.