[Electron microscopic study of the lung tissue. 2. Microstructure of the alveolar epithelium in mice embryo].
D000818:Animals; D004847:Epithelial Cells; D008264:Macrophages / Q000166:cytology; D051379:Mice; D008854:Microscopy, Electron; D011650:Pulmonary Alveoli / Q000166:cytology*; D013997:Time Factors