title: Thymidine phosphorylase activity in plasma: a cancer marker or an artifact of ultrafiltration?
mesh_terms: D002469:Cell Separation; D006098:Granulocytes / Q000201:enzymology; D006801:Humans; D007938:Leukemia / Q000201:enzymology; D009369:Neoplasms / Q000201:enzymology*; D010430:Pentosyltransferases / Q000097:blood*; D010949:Plasma / Q000201:enzymology; D013939:Thymidine Phosphorylase / Q000097:blood*; D014462:Ultrafiltration
chemical_list: D010430:Pentosyltransferases; D013939:Thymidine Phosphorylase