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. 2021 Sep 30;26(19):5937. doi: 10.3390/molecules26195937

Figure 4.

Figure 4

The swelling behavior of hydrogels (CPG0, CPG1, CPG2, CPG3 and CPG4) was analyzed in different media. (a) Swelling in aqueous media, (b) swelling in NaCl media, (c) swelling CaCl2 media and (d) degradation of hydrogels in PBS media.