title: Carcino-embryonic antigen (CEA) during treatment of recurrent or inoperable tumours of the digestive tract.
mesh_terms: D002272:Carcinoembryonic Antigen / Q000032:analysis*; D004067:Digestive System Neoplasms / Q000276:immunology*; D005500:Follow-Up Studies; D006801:Humans; D009364:Neoplasm Recurrence, Local / Q000276:immunology*
chemical_list: D002272:Carcinoembryonic Antigen