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Bone regeneration in rat calvarial bone defects. (a) Representative micro-CT images of different samples post-transplantation in rat calvarial defects at 4 and 8 weeks, respectively. Red dashed circles and arrows indicated the space in which the original defect was created (all scale bar lengths are 1 mm). (b) Corresponding values of new BV/TV for various samples based on micro-CT data (*P ≤ 0.05, n = 3 for each group)
