Figure 5. MBP7 expression in different areas of the periodontal complex from the treated teeth: (a) Positive biomaterial (40×); (b) Highly positive granular biomaterial and moderately positive cellular biomaterial (100×); (c) Transforming biomaterial, at the junction between the root and the alveolar old bone and desmodontal remnants; decreasing intensity from the cellular part to the fibrously transformed biomaterial (100×); (d) Moderately positive cellular biomaterial and less intense fibroblastic biomaterial (100×); (e) Delicate trabeculae of new bone, presenting slightly positive osteoblasts/osteocytes, and negative old bone (100×); (f) Positive osteoblasts and some osteocytes in new bone trabeculae, at very high magnification (1000×). (g) Moderately positive lateral periodontal desmodontium and negative cellular cementum, dentin and old alveolar bone (100×); (h) Moderately positive apical periodontal space and negative root (200×). Immunohistochemical staining; positivity is indicated by the brown staining of the cytoplasm and/or nuclei on a blue background.