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Viability of hMSCs cultured in non-degrading PEG hydrogel array spots containing A) 0.1mM RGDSP ligand with variable concentrations of FGF-2, and B) 2.5mM RGDSP ligand with variable concentrations of FGF-2. *Denotes a significant difference compared to 0 ng/ml condition at the same time point, ANOVA p<0.05.
