#fluorouracil  an antimetabolite used to treat certain cancers
  supertype:  antimetabolite  an antineoplastic drug that inhibits the utilization of a metabolite
     supertype:  antineoplastic_drug__antineoplastic__cancer_drug  any of several drugs that control or kill neoplastic cells; used in chemotherapy to kill cancer cells; all have unpleasant side effects that may include nausea and vomiting and hair loss and suppression of bone marrow function
        supertype:  cytotoxic_drug__cytotoxicdrug  any drug that has a toxic effect on cells; commonly used in chemotherapy to inhibit the proliferation of cancerous cells
           supertype:  medicament__medicine__medication__medicinal_drug__medicinaldrug  something that treats or prevents or alleviates the symptoms of disease
              supertype:  drug  a substance that is used as a medicine or narcotic
                 supertype:  agent.causal_agent  a substance that exerts some force or effect
                    supertype:  causal_agent__cause__causal_agency  any entity that causes events to happen
                       supertype:  thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                          supertype:  thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

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