Bone marrow smear from a patient with acute monocytic leukemia with maturation (FAB M5B). This field shows a range of maturation of monocytic cells. (Wright-Giemsa stain).
From Brunning, RD, McKenna, RW. Tumors of the bone marrow. Atlas of tumor pathology (electronic fascicle), Third series, fascicle 9, 1994, Washington, DC. Armed Forces Institute of Pathology.