Figure 1. Photomicrographs of horizontal sections of maxillary first molars from control and experimental animals (hematoxylin and eosin stain). A, D, G, J, and M: Middle-buccal root of first molars at days 0, 2, 4, 7, and 14 (original magnification, x40; Bar in M = 150 µm). B, E, H, K, and N: Tension side at days 0, 2, 4, 7, and 14 (original magnification, x200; Bar in O = 150 µm). C, F, I, L, and O: Compression side of moving teeth at days 0, 2, 4, 7, and 14 (original magnification, x200). Hyalinized tissues were observed at days 2 and 4, shown in D and F. AB, alveolar bone; CEM, cementum; PDL, periodontal ligament; HY, hyalinized tissue; OC, osteoclast; and BV, blood vessel. n = 3.