Figure 3. Histological aspects of marginal gingival tissue. (A) Section around a ligated molar from the placebo-treated group, showing intense inflammatory infiltrate, consisting mainly of neutrophils. (B) Section around a ligated molar from a PTH-treated animal, showing limited inflammatory cell infiltrate. Scale bar represents 0. 05 mm. (C) Total number of inflammatory cells found in the marginal gingival tissue around molars obtained from unligated and ligated teeth from the placebo group and ligated teeth from the PTH-treated group (*p < 0.05). N = 10/group.