title: Ultrastructural morphology of the tracheal epithelium of some species of testudinates.
mesh_terms: D000818:Animals; D004848:Epithelium / Q000648:ultrastructure; D008854:Microscopy, Electron; D014132:Trachea / Q000648:ultrastructure*; D014426:Turtles / Q000033:anatomy & histology*