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Figure 1. Immunohistochemical staining for iNOS, nitrotyrosine, and poly (ADP-ribose) polymerase formation. Positive staining for iNOS (a), nitrotyrosine (c), and poly (ADP-ribose) polymerase (e, e1) was observed in gingivomucosal tissue after ligature treatment. In gingivomucosal tissue of rosiglitazone-treated rats (10 mg/kg i.p., daily for 8 days), no positive staining was observed for iNOS (b), nitrotyrosine (d), and poly (ADP-ribose) polymerase (f). The Fig. is representative of at least 3 experiments performed on different experimental days.
