title: Letter: 5-fluorouracil and the thyroid.
mesh_terms: D001943:Breast Neoplasms / Q000097:blood / Q000188:drug therapy*; D005260:Female; D005472:Fluorouracil / Q000494:pharmacology* / Q000627:therapeutic use; D006801:Humans; D013961:Thyroid Gland / Q000187:drug effects*; D013972:Thyrotropin / Q000097:blood; D013974:Thyroxine / Q000097:blood; D014284:Triiodothyronine / Q000097:blood
chemical_list: D014284:Triiodothyronine; D013972:Thyrotropin; D013974:Thyroxine; D005472:Fluorouracil