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NAMPT protein levels in gingival biopsies. Gingiva from periodontally healthy ((a) and (d)), gingivitis ((b) and (e)), and periodontitis ((c) and (f)) subjects. Hematoxylin and eosin stain ((a)–(c)). NAMPT protein, as demonstrated by immunohistochemistry ((d)–(f)). Images from one representative individual of each group are shown. GE: gingival epithelium; CT: connective tissue, GF: fibroblast; EC: endothelial cell.
