title: Mucous cells of the respiratory sac in an air-breathing fish Saccobranchus fossilis (Bloch).
mesh_terms: D000400:Air Sacs / Q000032:analysis / Q000166:cytology / Q000502:physiology*; D000818:Animals; D004848:Epithelium / Q000032:analysis / Q000648:ultrastructure; D005399:Fishes / Q000502:physiology*; D006025:Glycosaminoglycans / Q000032:analysis* / Q000502:physiology; D006651:Histocytochemistry; D012119:Respiration
chemical_list: D006025:Glycosaminoglycans