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(a) Degree of methacrylation as determined by TNBS study; three-volume percentages (0.25%, 1.25%, and 20%) of MA were explored to scrutinize the degree of methacrylation of GelMA. (b) Degradation, (c) swelling, and (d) water contact angle of pristine GelMA and NCST hydrogels under 600 s UV exposure.
