Modern Pathology

FIGURE 1

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Immunohistochemical expression of cytokeratins 7 and 20 in malignant salivary gland tumors

Nikolaos G Nikitakis, Konstantinos I Tosios, Vasileios S Papanikolaou, Helen Rivera, Stavros I Papanicolaou and Olga B Ioffe

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Figure 1.

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Hematoxylin and eosin appearance (a), (d), and immunohistochemical analysis for CK7 (b), (e) and CK20 (c), (f) in two cases of mucoepidermoid carcinoma. The first case (upper panel) showed diffuse and strong positivity for CK7, while it was negative for CK20. The second case (lower panel) was diffusely and strongly positive for CK7, also demonstrating weak and focal expression of CK20. Magnification for (ac) is times 100, while magnification for (df) is times 200.

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