Intrathecal methotrexate.
D002490:Central Nervous System / Q000187:drug effects; D003561:Cytarabine / Q000008:administration & dosage; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007278:Injections, Spinal; D007938:Leukemia / Q000188:drug therapy; D008727:Methotrexate / Q000008:administration & dosage* / Q000009:adverse effects; D009994:Osmolar Concentration
D003561:Cytarabine; D008727:Methotrexate