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Increased levels of modified nucleosides have been observed in urine from patients suffering from several cancers. In this study, we evaluated whether urinary nucleosides can serve as potential tumor markers for colorectal cancer by high performance liquid chromatography–electrospray/tandem mass spectrometry (HPLC/ESI-MS/MS).A simple and specific method based on HPLC/ESI-MS/MS was developed to determine...
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