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The histomorphometric analysis of new bone area fraction (A) and new blood vessel density (B). The co-culture group showed the highest amount of new bone formation than the other three groups (p < 0.05). The CPC control group had the least amount of new bone formation and blood vessels number in all groups (p < 0.05). Each value is mean ± standard deviation (n = 6). Dissimilar letters indicated significantly different values (p < 0.05).
