title: Late intensification therapy for childhood acute lymphocytic leukemia.
mesh_terms: D002648:Child; D002675:Child, Preschool; D003561:Cytarabine / Q000008:administration & dosage; D006801:Humans; D007945:Leukemia, Lymphoid / Q000188:drug therapy*; D008134:Long-Term Care; D012008:Recurrence; D013866:Thioguanine / Q000008:administration & dosage
chemical_list: D003561:Cytarabine; D013866:Thioguanine