[Diagnosis of gastrointestinal cancer by analysis of urine].
D002374:Catalase / Q000032:analysis; D005770:Gastrointestinal Neoplasms / Q000201:enzymology / Q000652:urine*; D006801:Humans; D007202:Indicators and Reagents
D007202:Indicators and Reagents; D002374:Catalase