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. 2021 Jul 27;22(8):3486–3496. doi: 10.1021/acs.biomac.1c00573

Figure 1.

Figure 1

Characterization of hydrogel bulk properties. (a) Swelling ratio measurements of the three different hydrogels groups. Data represent the mean ± SD after swelling in αMEM (n = 5). PL-PEG hydrogels exhibited increased swelling at all time points compared to the other two groups (p ≤ 0.05). (b) Optical images representing hydrogels swollen in αMEM for 72 h. The average diameters for PL-PEG, SDF1α-PEG, and MEM-PEG gel disks shown in the image are 7.2, 6.7, and 6.6 mm, respectively. The top panel shows a view of the hydrogels from above, while the bottom panel shows a lateral view of the hydrogels. (c) Comparison of storage moduli of all hydrogel groups. (* indicates significance compared to PL-PEG hydrogels where p ≤ 0.05).