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Ex vivo evaluation of bone healing using microCT imaging analysis at 90 days comparing solid 100 μm, solid 500 μm, and hollow 500 μm average sized spheres. A: Bone volume as calculated by microCT evaluation. B: Percent change in bone volume compared to Day 30 control (data not shown). Shown are day 90 groups, n = 4. *Significant from control day 90. Here, p < 0.05.
