title: Definition and classification of acute leukemia.
mesh_terms: D000208:Acute Disease; D001773:Blood Cells / Q000378:metabolism; D006412:Hematopoietic Stem Cells / Q000378:metabolism; D006801:Humans; D007945:Leukemia, Lymphoid / Q000473:pathology*; D007951:Leukemia, Myeloid / Q000473:pathology*; D015470:Leukemia, Myeloid, Acute / Q000473:pathology*; D013194:Staining and Labeling