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. Author manuscript; available in PMC: 2020 Dec 16.
Published in final edited form as: J Mater Chem B. 2016 Apr 18;4(20):3526–3533. doi: 10.1039/c6tb00064a

Figure 2. Optical photomicrographs and wall height measurement of dual-crosslinked OMA/PEG microwell hydrogels with various pattern sizes.

Figure 2.

Dual-crosslinked OMA/PEG hydrogel microwells formed with (a) 500 μm and (b) 100 μm grid patterns. (c) A cross section of the dual-crosslinked OMA/PEG hydrogel microwells formed with the 500 μm grid pattern. (d) Wall height of dual-crosslinked OMA/PEG hydrogel microwells after differential swelling of the hydrogels was induced in diH2O, DMEM or DPBS. *p<0.05 compared to 100 μm. **p<0.05 compared to DMEM and DPBS. (e) Immobilization of heparin on the bottom of the hydrogel microwell as demonstrated by toluidine blue O staining. The scale bars indicate 250 μm.