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Cellular changes in a rabbit DO model during distraction osteogenesis of the tibia (stain is Trichrome staining). The numbers indicate the number of weeks after the distraction process was started (1–3 are during the distraction phase and 4–6 are during the consolidation phase). Co, cortex; LZ, lengthened zone; Ca, callus; FIZ, fibrous interzone. Bar scale = 2 mm. Reprinted from Rauch et al. (34), with permission from Elsevier.
