Figure 4.

Screening for cell attachment using SAM arrays. HUVECs and hMSCs were seeded onto SAM arrays presenting varied GRGDSP densities for 1 hr and then rinsed to remove unattached cells. (A) Cell attachment per spot was scaled to maximal attachment conditions to observe relative cell attachment. (B) Focal adhesion complexes and cytoskeletal organization (vinculin:green, actin:red, and nuclei:blue) of HUVECs and hMSCs on SAM arrays at 24 hrs. (Error bars indicate standard error of the mean. Asterisks indicates significant increase in hMSC attachment compared to HUVECs at the same GRGDSP density, p < 0.05.)