Methotrexate allergy.
D001943:Breast Neoplasms / Q000188:drug therapy*; D004342:Drug Hypersensitivity / Q000209:etiology*; D005260:Female; D006801:Humans; D008727:Methotrexate / Q000009:adverse effects* / Q000627:therapeutic use
D008727:Methotrexate