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Hematoxylin and eosin-stained sample from the positive control group. The pressure (A, B) and tension (C, D) sides are shown. Magnification: A and C, ×2.5; B and D, ×63. D, Dentin; PDL, periodontal ligament; AB, alveolar bone; OB, osteoblast; OC, osteoclast; RF, resorption foci.
