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Higher magnification of H&E histological staining for representative DermaMatrix printed disks at 4 weeks (A) and 8 weeks (B) using 100 μg/mL BMP-2, 12 OPs. IC, invading undefined cells; WB, woven bone; BM, bone marrow space; BV, blood vessel; C, endochondral bone; LB, lamellar bone (magnification, × 200).
