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(A) Gelatin dissolution behavior of type A gelatin-PEG hydrogels (◆, GA5P5; ■, GA10P5; ▲, GA15P5; □, GA10P7.5; ○, GA10P10). (B) Gelatin dissolution behavior of type B gelatin-PEG hydrogels (◆, GB5P5; ■, GB10P5; ▲, GB15P5; □, GB10P7.5; ○, GB10P10).
