title: Recent insights into the molecular basis of intrinsic resistance of colorectal cancer: new challenges for systemic therapeutic approaches.
mesh_terms: D000964:Antimetabolites, Antineoplastic / Q000627:therapeutic use; D016923:Cell Death / Q000187:drug effects; D015179:Colorectal Neoplasms / Q000628:therapy*; D003131:Combined Modality Therapy; D019008:Drug Resistance, Neoplasm / Q000235:genetics*; D005472:Fluorouracil / Q000627:therapeutic use; D006801:Humans; D011743:Pyrimidines / Q000009:adverse effects; D013940:Thymidylate Synthase / Q000187:drug effects