Figure 4

Immunohistochemical staining of SLMAP and IGJ in pulmonary sarcomatoid carcinomas, adenocarcinomas, and squamous cell carcinomas Original magnification x100; higher SLMAP expression levels in giant cell carcinoma (a) and adenocarcinoma (b) in comparison with squamous cell carcinoma (c); Giant cell carcinoma with rare IGJ positive cells (d) and two examples of adenocarcinoma (e) and squamous cell carcinoma (f) showing a higher number of IGJ positive cells.