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The fractured calluses of the model, rhBMP-2 and Psoralen + rhBMP-2 groups were subjected to 3-point bending analysis at 21 days of healing. (A) Maximum load, (B) maximum stress and (C) flexure modulus. Values are expressed as the mean ± standard deviation. *P<0.05 vs. model group; #P<0.05 vs. rhBMP-2 group. rhBMP-2, recombinant human bone morphogenetic protein 2.
