title: When is the right time to assess tumour markers?
authors.forename: Anna
authors.initials: A
authors.lastname: York
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis*; D020869:Gene Expression Profiling / Q000379:methods; D006801:Humans; D007158:Immunologic Techniques; D007511:Ischemia / Q000378:metabolism; D012004:Rectal Neoplasms / Q000378:metabolism*; D016707:Tissue Fixation
chemical_list: D014408:Biomarkers, Tumor