title: Letter: Antagonism between cranial irradiation and intrathecal methotrexate in meningeal leukaemia.
mesh_terms: D001099:Arachnoid / Q000187:drug effects; D006801:Humans; D007278:Injections, Spinal; D002955:Leucovorin / Q000494:pharmacology; D007938:Leukemia / Q000150:complications / Q000188:drug therapy / Q000532:radiotherapy / Q000628:therapy*; D008578:Meninges / Q000473:pathology*; D008727:Methotrexate / Q000008:administration & dosage* / Q000494:pharmacology / Q000627:therapeutic use / Q000633:toxicity; D011830:Radiation Effects; D012886:Skull / Q000528:radiation effects*
chemical_list: D002955:Leucovorin; D008727:Methotrexate