title: Letter: Blast cell crisis in acute leukemia.
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D002648:Child; D005260:Female; D006801:Humans; D007938:Leukemia / Q000473:pathology / Q000628:therapy*; D007962:Leukocytes / Q000473:pathology; D007964:Leukocytosis