Figure 3
From: Clear-cell variant of calcifying epithelial odontogenic tumor (Pindborg tumor) in the mandible

Histochemical and immunohistochemical aspects. Staining was positive for Congo red stain for the intercellular eosinophilic material (a, ×200). The tumor cells were positive for immunochemical staining of cytokeratin (b, ×100), negative for S-100 (c, ×100) and smooth muscle actin (d, ×200) as well as low Ki-67 labeling index (e, ×100).