Figure 2.

The effects of HA, CS and HACS supplementation on total cellular DNA levels (an indicator of relative chondrocyte numbers) in fibrin-alginate hydrogels that were cultured for one week (n = 7 for each treatment), or two weeks (n = 5 for each treatment), or harvested immediately (0 days) after cell seeding (n = 5). Untreated hydrogels were not supplemented with either HA or CS. Error bars represent one standard deviation from the mean. Asterisks indicate a significant increase in total cellular DNA levels in untreated hydrogels after one and two weeks of culture compared to the beginning of culture (0 days). (** p < 0.01).