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Combined injection of BMAC and PRP at the osteotomy site enhanced bone regeneration in distraction osteogenesis. (A) BMAC is shown in the GPS® tube after centrifugation. (B) PRP is shown in the GPS® tube after centrifugation. (C) Three milliliters of the aspirate sampled from the middle layer in each tube was injected at the osteotomy site using a 22-gauge spinal needle. (D) The exact placement of the spinal needles was confirmed by the C-arm.
