text: Histology of the lung
  The left lung was fixed by gentle infusion of fixative (4% paraformaldehyde) through the tracheal cannula [24]. After excision, the lung was immersed in a fresh fixative for 2 h. The lung lobe was embedded in paraffin and cut into 3 mum transverse sections, followed by immunohistochemical and chemical staining. Photomicrographs were captured using KS400 image analyze platform (Zeiss, Oberkochen, Germany) and analyzed quantitatively.
  
entities.text: ['lung']
entities.type: Organ
entities.entity_id: PMC-2959025-sec-14_T1
entities.text: ['lung']
entities.type: Organ
entities.entity_id: PMC-2959025-sec-14_T2
entities.text: ['tracheal']
entities.type: Multi-tissue_structure
entities.entity_id: PMC-2959025-sec-14_T3
entities.text: ['lung']
entities.type: Organ
entities.entity_id: PMC-2959025-sec-14_T4
entities.text: ['lung lobe']
entities.type: Multi-tissue_structure
entities.entity_id: PMC-2959025-sec-14_T5