Pores of Kohn.
D000818:Animals; D001485:Basement Membrane / Q000166:cytology; D002196:Capillaries; D004847:Epithelial Cells; D008264:Macrophages / Q000166:cytology; D008297:Male; D051379:Mice; D008854:Microscopy, Electron; D011650:Pulmonary Alveoli / Q000098:blood supply / Q000166:cytology*