Bone defect and deformity have been common diseases in clinical. And biological artificial bone fabricated by seed cells, scaffolds, and growth factors according to tissue engineering methods has been thought as one of the most effective technique which could potentially be used in the future for the treatment of large bone defects. Some experiments have been done on how to keep and lengthen biological activity of growth factor in this research. At first, experiments about the effects of rhBMP-2 and rhbFGF ...