Fig. 1
From: Unique microRNAs in lung adenocarcinoma groups according to major TKI sensitive EGFR mutation status
Histologic findings of primary lung adenocarcinoma. a Low magnification of an adenocarcinoma that has a central scar (*) (H&E). b High magnification of the same case (H&E): cuboidal to columnar shaped cells grow in a lepidic pattern along with alveolar wall. c TTF-1 imunohistochemical stain: diffuse strong nuclear positivity of tumor cells. d Napsin A imunohistochemical stain: diffuse strong granular cytoplasmic positivity of tumor cells