An image from a bone marrow smear demonstrating numerous myeloid precursors arrested at the promyelocyte stage, and cells with bundles of auer rods known as faggot cells in a patient with acute promyelocytic leukemia (50X oil immerson).
An image from a peripheral blood smear demonstrating a neutrophilia and myeloid precursors seen in a patient with chronic myelogenous leukemia (50X oil immersion).