CLCA2 as a Novel Immunohistochemical Marker for Differential Diagnosis of Squamous Cell Carcinoma from Adenocarcinoma of the Lung

Figure 2

Examples of CLCA2 immunoreactivity in squamous cell carcinoma (SCC) and adenocarcinoma (ADC) of the lung. Positive immunohistochemical staining for CLCA2 was observed in two SCC cases ((a) and (c) Hematoxylin and eosin (H&E); (b) and (d) CLCA2 immunohistochemistry), and negative staining was observed in one SCC case ((e) H&E; (f) CLCA2 immunohistochemistry) and one ADC case ((g) H&E; (h) CLCA2 immunohistochemistry). Scale bar = 50 μm.

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