Lung adenocarcinoma harboring rare epidermal growth factor receptor L858R and V834L mutations treated with icotinib: A case report

Figure 2 Representative images of hematoxylin and eosin-stained lung adenocarcinoma. A and B: The tumor cells were characterized by the variation in nucleus size and shape, the deep staining and the increased nucleoplasm index, which was marked by a closed curve; Also, hematoxylin and eosin staining showed that the tumor cells invaded the surrounding tissue (A: 100 × and B: 200 ×).