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Influence of the following parameters on PEG hydrogel mesh size: a) polymer molecular weight, b) cross-linker’s number of methylene groups between the ester and the thiol moieties, c) polymer density. Open symbols note non-degradable gels; shaded or × symbols note degradable gels. Unless otherwise stated, hydrogels were synthesized with 10 kDa 4-arm PEG-VS and PEG-SH 2 3.4 and a total polymer density of 10% (w/v).
