An image from a bone marrow smear showing a promyelocyte with a distinct nucleolus surrounded by other myeloid precursors seen in a patient with a normal bone marrow (100X oil immersion).
An image from a bone marrow smear showing a promyelocyte with two nucleoli and primary granules with an abnormal distribution beside an eosinophil and metamyelocyte (100X oil immersion).
An image from a bone marrow smear showing a pronormoblast with a loose chromatin pattern, visible nucleoli, and a basophilic cytoplasm seen in a patient with a normal bone marrow (100X oil immersion).