Immunohistochemical staining of ANO1 protein expression in human lung tissues of benign alveoli adjacent to carcinoma, squamous cell carcinoma and adenocarcinoma.

<p>(A) Benign alveoli adjacent to carcinoma showing negative ANO1 staining. (B) Squamous cell lung carcinoma showing negative ANO1 staining. (C) Human lung adenocarcinoma cancer tissue showing ANO1 staining (brown color) of neoplastic epithelium. The scale bar indicates 50 μm.