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Figure 2. PCNA-positive basal cells in the junctional epithelium (A,B) and TUNEL-positive fibroblasts (C,D) in rat gingivae. PCNA-positive basal cells of junctional epithelium and TUNEL-positive periodontal ligament fibroblasts with brown-stained nuclei were found to be more numerous in the Combination group (B,D, respectively) than in the Control group (A,C, respectively) at 8 wks. AB, alveolar bone; CEJ, cemento-enamel junction; CM, cementum; JE, junctional epithelium. Scale bar = 20 µm.
