title: Morphology of the terminal sac period in the rat lung. (light and electronmicroscopic study).
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D002454:Cell Differentiation; D005260:Female; D005865:Gestational Age; D008168:Lung / Q000166:cytology / Q000196:embryology*; D008854:Microscopy, Electron; D011247:Pregnancy; D011650:Pulmonary Alveoli / Q000196:embryology / Q000648:ultrastructure; D051381:Rats