Figure 7

Pulmonary intestinal-type adenocarcinoma. Cytokeratin 20 was not expressed, including an absence in mucin secreting and goblet cells (immunoperoxidase, × 200).
Pulmonary intestinal-type adenocarcinoma. Cytokeratin 20 was not expressed, including an absence in mucin secreting and goblet cells (immunoperoxidase, × 200).