Fig. 10.

Representative epifluorescent images of fibrobasts grown on A) uncoated, B) pSBMA-coated, and C) pCBMA-coated PDMS after substrate immersion in culture medium for 14 days. Fibroblasts are labeled with Alexa 488-phalloidin (green). D) Fibroblast cell density at 0 and 14 days in culture medium for uncoated, pSBMA-coated, and pCBMA-coated PDMS. A significant difference was observed between uncoated and the zwitterion-coated PDMS at 0 and 14 days. No significant increase in cell density was observed after the 14 day incubation for all substrates. Error bars represent standard error of the mean.