Figure 1From: Utility of five commonly used immunohistochemical markers TTF-1, Napsin A, CK7, CK5/6 and P63 in primary and metastatic adenocarcinoma and squamous cell carcinoma of the lung: a retrospective study of 246 fine needle aspiration casesImmunostaining pattern of CK5/6 and P63 in squamous cell carcinomas. A, histomorphology of SqCC on H&E slide; B, immunostain of CK5/6 in tumor cells, C, immunostain of P63 in tumor cells, and D, stain of TTF-1 in tumor cells and entrapped normal lung bronchial epithelium. Tumor cells of SqCC are positive for CK5/6 and P63, but negative for TTF1.Back to article page