Figure 2
From: Immunohistochemical expression of cytokeratins 7 and 20 in malignant salivary gland tumors
Hematoxylin and eosin appearance (a), (d), and immunohistochemical analysis for CK7 (b), (e) and CK20 (c), (f) in two cases of adenoid cystic carcinoma. The first case (upper panel) displayed diffuse and strong positivity for CK7 (b), being negative for CK20 (c). The second case (lower panel) showed focal and strong CK7 expression (e), and focal and weak CK20 expression (f). Magnification for (a–c) is × 100, while magnification for (d–f) is × 200.
