title: Scanning and transmission electron microscopy of the lungs of Polypterus senegalensis.
mesh_terms: D000818:Animals; D004848:Epithelium / Q000648:ultrastructure; D005399:Fishes / Q000033:anatomy & histology*; D008168:Lung / Q000033:anatomy & histology*; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning