Type Name M0 Minimally differentiated acute myeloblastic leukemia M1 Acute myeloblastic leukemia, without maturation M2 Acutemyeloblastic leukemia, with granulocytic maturation M3 Promyelocytic, or acute promyelocytic leukemia (APL) M4 Acute myelomonocytic leukemia M4eo Myelomonocytic together with bone marrow eosinophilia M5M5a M5b Acute monoblastic leukemia Acute erythroid leukemia M6M6a M6b Erythroleukemia Very rare pure erythroid leukemia M7 Acute megakaryoblastic leukemia M8 Acute basophilic leukemia

Table 1: The French-American-British (FAB) classification of AML In the 1970s, a group of French, American, and British experts divided acute myeloid leukemias into eight subtypes (M0-M7). Later, in 1999 [4], a ninth subtype was proposed (M8).

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