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Strain-dependent permeability of PEG508 (A), PEG3.4k (B), PEG6k (C), and PEG10k (D) hydrogels with PEG concentration ranging from 10 to 40% w/w. Samples were compressed dynamically with 0.5% amplitude and 0.01, 0.1, 1 Hz at 15% and 30% compression offsets. Data are mean ± SEM (n = 4).
