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Bone formation in a rat cranial defect in untreated and after implantation of SF-based hydrogel: (a–d) 3D reconstruction views of the studied defect, (e–h) sagittal cross-section of the bone and (i) formed bone volume per defect (** p < 0.01). Reproduced by permission from Shi et al. [119]. Copyright 2017, Wiley-VCH.
