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Fulvene gels remain stable long-term under physiologically relevant conditions. (A) Schematic of 4-arm PEG network. (B) Mass swelling ratio and (C) dry mass of 4-arm PEG-based DA hydrogel networks over time for samples maintained in PBS (pH 7.4) at 37 °C. (D) Schematic of 8-arm PEG network. (E) Mass swelling ratio and (F) dry mass of 8-arm PEG-based DA hydrogel networks over time for samples maintained in PBS (pH 7.4) at 37 °C. Data are mean ± s.d., n = 3 gels per time point.
