Fig. 2From: Positive response to Icotinib in metastatic lung adenocarcinoma with acquiring EGFR Leu792H mutation after AZD9291 treatment: a case reportHistological findings of tumor tissue. a Histological finding with hematoxylin and eosin–stained biopsy specimen from PNLB on April 15th 2015. b Histological finding with hematoxylin and eosin–stained biopsy specimen from PNLB on December 7th 2015Back to article page