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Effect of immobilized GAGs on total cell expansion. (A) All time points: the total cell expansion increased on all surfaces till day 14. Error bars have been omitted for clarity. (B) Days 14 and 17: significantly higher total cell expansion was observed on the heparin and dermatan sulfate surfaces compared to both the controls at day 14. *Comparison with polystyrene control, p < 0.05. †Comparison with chitosan control, p < 0.05.
