[Electron microscopic study on differentiation of epithelial cells of the tracheal mucosa in newborn rats and embryos].
D000818:Animals; D004622:Embryo, Mammalian; D004847:Epithelial Cells; D006801:Humans; D007231:Infant, Newborn; D008854:Microscopy, Electron; D009092:Mucous Membrane / Q000166:cytology* / Q000196:embryology; D051381:Rats; D014132:Trachea / Q000166:cytology* / Q000196:embryology