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Characterization of gelation, swelling behavior, and morphology of HCP hydrogels. (A) Photograph of hydrogel formation. (B) Gelation times determined by the vial tilting method in PBS at 37 °C. (C) Swelling ratios of hydrogels. Representative Cryo-SEM images of (D) HCP700L, (E) HCP3400 L, and (F) HCP8000L hydrogels. Scale bars: 10 μm. All data are reported as mean ± SD (n = 3). * P < 0.05 and ** P < 0.01.
