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FAB classification


Definition: French-American-British classification of acute leukemias based on the study of microscopic features and cytochemistry of blast cells; it subdivides acute myelogenous leukemias into 8 groups (M0–M7) and acute lymphoblastic leukemias into 3 groups (L1–L3); widely used in clinical practice.

Synonym(s): French-American-British classification

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