A : Picture of bone marrow smear (control); Normal granulocytes and erythroblasts are evident.

B : Acute lymphoid leukemia (ALL); There is a marked proliferation of small lymphoblasts.

C : Acute myeloid leukemia (AML); There is a marked proliferation of large myeloblasts.

D : Chronic myeloid leukemia (CML); There is a marked proliferation of granulocytes at various stages of maturation.

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