Serum enzymes in carcinoma gastrointestinal tract.
D004798:Enzymes / Q000097:blood*; D005770:Gastrointestinal Neoplasms / Q000201:enzymology*; D006801:Humans; D008111:Liver Function Tests; D008113:Liver Neoplasms / Q000201:enzymology / Q000556:secondary*
D004798:Enzymes