title: Letter: Allopurinol in leukaemias and lymphomas.
mesh_terms: D000493:Allopurinol / Q000627:therapeutic use*; D004357:Drug Synergism; D006801:Humans; D007938:Leukemia / Q000188:drug therapy*; D008223:Lymphoma / Q000188:drug therapy*; D015122:Mercaptopurine / Q000627:therapeutic use; D013891:Thiouridine / Q000627:therapeutic use
chemical_list: D013891:Thiouridine; D000493:Allopurinol; D015122:Mercaptopurine