Tumor thymidylate synthase 1494del6 genotype as a prognostic factor in colorectal cancer patients receiving fluorouracil-based adjuvant treatment .
B-DiseaseOrPhenotypicFeature B-GeneOrGeneProduct I-GeneOrGeneProduct B-SequenceVariant O O O O O O B-DiseaseOrPhenotypicFeature I-DiseaseOrPhenotypicFeature B-OrganismTaxon O B-ChemicalEntity O O O