Irradiation of C.N.S. in leukaemia.
D002493:Central Nervous System Diseases / Q000532:radiotherapy*; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007945:Leukemia, Lymphoid / Q000188:drug therapy / Q000532:radiotherapy*; D008727:Methotrexate / Q000627:therapeutic use; D011879:Radiotherapy Dosage; D012075:Remission, Spontaneous; D013131:Spine / Q000254:growth & development
D008727:Methotrexate