title: Ultrastructural differentiation of the epithelium and mucous glands of the esophagus in the chick embryo.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D002642:Chick Embryo; D003593:Cytoplasm; D004848:Epithelium / Q000196:embryology*; D004947:Esophagus / Q000166:cytology*; D008854:Microscopy, Electron; D008928:Mitochondria; D009077:Mucins / Q000378:metabolism; D009093:Mucus / Q000378:metabolism*; D012270:Ribosomes
chemical_list: D009077:Mucins