Figure 5.

Microscopy images of the hydrogel samples prepared using PDMS molds with 10 μm wide circles and 20 μm intercenter spacing, 12 wt % solutions of polymer samples of 6, 17, and 31 kDa, and PEG-induced hydrogelation. Hydrogels were incubated in PBS at 4 or 37 °C for 7 days. Images correspond to the quantitative data presented in Figure 4.