Fig. 2
From: Pulmonary invasive mucinous adenocarcinoma mimicking pulmonary actinomycosis
Pathological histology expression of lung. a A hematoxylin–eosin (HE) staining showing columnar tumor cells with abundant intracytoplasmic mucin and basally located nuclei (magnification × 200). b–d Immunohistochemistry staining showing the strong positive CK7 (b), partial positive Thyroid Transcription Factor-1 (TTF-1) (c) and the focal positive Napsin A (d) tumor cells (magnification × 200)